What do I do if a seller does not ship my item and does not give a refund on ebay?

I just won the bid of an iPhone on ebay for £230. I would like to know what I can do if the item is not shipped, and he does not give me a refund? I just double checked his feedback after I won and there's a comment saying 'Item not shipped and refund not given!' but all the other feedbacks are good, saying they got their items etc. I'm just a little scared I won't be getting my phone or my money back if I don't receive it. This is my first time using Ebay and I'm slightly worried, please help!

How to get a replacement iPhone 4 with my warrenty?

Basically, I left my iPhone 4 in an idock and got it the next morning. When I took it out the idock the play, skip and song name was at the top as if it was playing music but I couldn't hear anything, and there was no volume button. It was as if the iPhone thought it was still in the idock. I booked an appointment at the genius bar in the apple shop and explained the situation, but they noticed the water indicator had gone red on my phone suggesting that water had gotten into the phone and they said this could have effected the iPhone but unfortunetly this isn't covered under warrenty. However I don't believe that the problem is caused by the water indicator going off as it can take the tiniest amount of water for it to indicate water damage. As I'm unable to play music out loud in my iPhone now it can be annoying. Is there any other ways I could get a replacement through my warranty using another excuse?

Can I back up an iphone without syncing my current library?

I need more memory space on my itouch (8GB). My brother has a 16GB iphone 3g that I want to use for my music and apps. If I backup the phone, it starts syncing.

Where does the iphone backup to on windows 7?
Will my itunes library be lost when it syncs on the iphone?

My goal is to sync my library to the iphone, but first backup the iphone.

(sorry, really repetitive)

IPhone 4 (Verizon) monthly cost?

I have an Env touch right now and i think i pay 30 dollars every month. If i got an iPhone 4, with the smallest data plan, smallest calling minutes, and unlimited text how much would that be monthly?

How to get Siri on my Iphone 4S?

My situation is kind of complicated, I'll do the best I can to explain.
I'm an American that just moved to the Netherlands and I needed to buy a new phone so I decided to get the iphone 4s. However, I soon found out that the 4s in the Netherlands isn't equipped with siri because she isn't available in Dutch yet, or something. I want siri in English anyway. Is there anyway I can install her or something that doesn't involve doing anything like jail breaking my phone?

How fast should your heartbeat go to burn fat?

It said between 139bmp-159bmp for fat burn. But I find it really hard to get it over 130. The fastest its gone while exercising. Does this mean I won't be losing as much weight and should try harder? My heartbeat in resting sometimes goes as low as 55bmp. So I find it so difficult to get it above 139 while exercising. I'm using a heart exercise app on my iphone btw to work this out.

I'm having some problems with my iMessage

I've been trying to text my boyfriend, who has an iPhone, from my iPod touch, but the message won't send. I've made sure I'm connected to Wi-Fi. I've made sure my IOS was updated. I put his number on the iPhone spot in my contacts. I don't know if I'm doing something wrong. Can someone please help me?

Where can I find a waterproof iPhone case?

I'm looking for an iPhone 4 case that is completely waterproof. I've heard of some before and seen how they work but I have no idea where to find them. I'm looking for one that can be completely submerged underwater and still record videos or take pictures. I'm going on a trip tomorrow and would need to purchase it in a store. Does anyone know of any places that sell them and roughly how much they cost?

Iphone water damage. Caught in the rain?

So i have an iphone 4s
and i went out for a walk with the weather being nice,
then it started to rain and hail really badly, and my iphone only had a bumper on but i had gone out in only leggings and a top so i couldn't put it anywhere to keep it dry.

Once i finally got to a dry place i noticed that the flashlight was constantly on and the camera had steam behind the glass so i know water has got inside.
i don't know if my insurance will cover this or not (insurance with barclays)
basically i don't know what to do now? I've turned it off and left it upside-down between 2 books.
any help?