How to block a contact with iphone 5?

I started using an iphone5 recently, n there was somebody with always call me but i didn't really want to pick it up. I know there was a do not disturb function in the phone, but all i want is to block that person's call, it is really annoying so please help me!

My iPhone 4 isn't being recognised by my laptop

My iPhone 4 is about 2 years old and to transfer it from one network to another I need to back it up on iTunes and then clear and restore it. However my iPhone just isn't being recognised by my laptop, as in, when I plug it in it won't charge and my laptop doesn't offer any options - like download photos. It does make the sound that something has been inserted in though. It was recognised however on my brother's laptop, if that helps? I know it's not the USB port because I have a USB mouse - and that works in both ports. My laptop has had some issues this week - on Wednesday it wouldn't start up properly but *hopefully* those issues are gone. We used Norton Utilities and at first it said my registry health was poor, but by Friday it was high. Another thing - my laptop didn't shut down after plugging my iPhone in yesterday, it just stayed at the spinning 'Shutting Down' icon all night. Do you have any advice?

My iPhone 4 is not being recognised on my laptop

My iPhone 4 is about 2 years old and to transfer it from one network to another I need to back it up on iTunes and then clear and restore it. However my iPhone just isn't being recognised by my laptop, as in, when I plug it in it won't charge and my laptop doesn't offer any options - like download photos. It does make the sound that something has been inserted in though. It was recognised however on my brother's laptop, if that helps? I know it's not the USB port because I have a USB mouse - and that works in both ports. My laptop has had some issues this week - on Wednesday it wouldn't start up properly but *hopefully* those issues are gone. We used Norton Utilities and at first it said my registry health was poor, but by Friday it was high. Another thing - my laptop didn't shut down after plugging my iPhone in yesterday, it just stayed at the spinning 'Shutting Down' icon all night. Do you have any advice?

Added (1). It's not the USB it is an official Apple one and it worked on my brothers laptop - and yes my iPhone is supposed to charge from my laptop, it used to. And yes my iTunes is the latest.

Added (2). The USB definitly works - I plug it into a plug every night to charge…

IPhone not showing up in iTunes?

When I first downloaded iTunes it worked the usual way, but recently it hasn't been showing my iPhone. I made sure that iTunes was up to date. My USB cable is brand new. I uninstalled iTunes and re-installed it to make sure and my phone still doesn't show up.

Any help? I'm really trying to get more music on my phone!

Why am I getting two accounts worth of notifications: Instagram?

I have two Instagram account: a personal (used on iPhone) and a fan (used on iPad). I was using my iPad one day to comment on photo but it wouldn't let me. I got my iPhone, logged out of my personal account and logged into my fan account to see if that would work. At this point, both my devices were logged into my fan account. After I had finished, I logged off my fan account on my iPhone and back into my personal account. I continued to use the fan account on my iPad. Soon after, I got multiply notifications on my phone saying people liked my photo. I checked it and, out of about 10 notifications, 3 were actually for that account. I checked on my iPad and the rest of them were for the other account.

Does anyone know how to stop this? Thanks:]

Btw, feel free to follow me:3
Personal: _gemmac99_
Fan: lovinari4eva