How to unlock my iPhone 5s without icloud to activate it?

Basically my cousin got a iPhone 5s for Christmas but 2 months later she smashed it so her mum bought her a bran new one. I lost my phone and didn't have one so I found it in the draw and I ask what she doing with it and she said I could have it and get it fixed at the apple store so yesterday I went to the apple store and he asked me to sign into my Apple ID but it wasn't the one he said it's a icloud account so I rang her and she gave me her Apple ID so I typed that in and that wasn't the one either and he said we can't do anything unless we have that I cloud address. But I didn't know why they wouldn't let me pay for a new one so I took it to a shop to get the smashed screen fixed but when I was setting the phone up (been reset in apple store) it said to activate this phone you must type this I cloud in to get on the phone. My cousins never had a icloud email so i don't know what to do have I wasted money fixing the screen?

I forgot my lockscreen passcode of my iPhone 5S?

I forgot my lock screen passcode on my iPhone 5S, how do I remove the passcode without knowing it or what should to do?

Someone suggested me to restore my phone from existing backups by using iTunes, but i'm worries about some of the data will be lost if using this method. Anyone can help me out?

Can the police help get my money?

I was offered to buy an IPhone 4s for 100$. When the girl who had it came to us, my girlfriend looked at the phone. It said insert SIM. The girl told her it just needed a SIM, it was unlocked, and nothing was wrong with it. Well, my boss came up to me and asked if I wanted to use his SIM to check it out after she had sold it to me and left the store. So I did, and it turns out the phone was still locked to another persons Apple ID and even with a SIM I can't access the phone. It's just trash practically. Then we found out (not 100% sure on this one though) it's an IPhone 4 not 4s. I'm really upset about this. This happened only a few hours ago and I pleaded in a nice way for a refund but eventually was ignored. I'm unsure what to do because I don't know that the cops would do anything about my money. We have multiple witnesses of the transaction and what she said and it is also on camera plain as day. Is there anyway to retrieve my money?

If I delete Instagram, and download it again will it let me creat an account?

I just got a new phone. New to me old to the friend who gave it to me. His sister had it than he had it. It's and iPhone 5. I uses to have an LG spectrum, which I made my first Instagram account on. I deleted it so now i'm trying to make a new one and Instagram gave me an error message saying " too many accounts have been registered on this device". So how can I make my own Instagram account on my phone? Is there away around this? Is there an app that can creat the account for me and I can just change the credentials later?
Or if I delete the app all together and download it again, will it work?

FaceTime failed and other iPhone problems?

Okay, so this has just been throughout the last week, I've been having a lot of problems with my iPhone regarding FaceTime and iMessage.
First of all, whenever I FaceTime ANYONE, even when it uses an email and not a phone number, I get a popup of the pic I attached. I don't know what it means because I'm using an email and there aren't any phone numbers linked to the contact. This started happening yesterday.
Also, I've been have so many iMessage problems! A couple days ago, my messages were sending, but they would show up in the screen for a couple seconds then disappear. The people I was sending the messages to could see the iMessages, but I couldn't.
Another problem I've been having for quite some time now is messages not showing up at all! They are sent to me and I won't receive them until I turn my phone off then back on again.
Please help! Is it just a but and Apple is fixing it? I just got my phone a few months ago and I didn't expect so many problems that completely defeat the purpose of having an iPhone!
ThanksFaceTime failed and other iPhone problems Added (1). I've already tried resetting the network, and it didn't do anything.

How to charge my Iphone 4s while having a broken charging port?

I don't have the money to replace it and i thought of everything i could. Including the charging mats or pads, the reason those won't work is because iphones are not compatible with the QI that they use unless you put a special case on it, a special case that plugs into your phones charging port. Of course.

What should i look for in unlocked iphone 5s?

I recently broke my galaxy and decided to get the 5s.
The problem is i use a carrier called H2o and it isn't big like att, sprint, etc.
Does every 5s have a sim?
If i order a 5s from ebay saying its unlocked, would i be able to use it right away if i insert my h2o sim card?