Phone internet has completely stopped working

view full story

http://androidforums.com – I'm paying £13 a month for a plan with unlimited data with Three. My entire household are on unlimited data contracts with Three, also. Tonight, my phone has stopped connecting to the 3G internet... when I try to access google store, I get the message 'no connection', Facebook won't work, nothing will. I can't refresh my emails etc, I do not pay for this shite, when the connection works it's incredibly slow. Every other phone on Three in my house is working absolutely fine with the internet, so why isn't mine? Any ideas? It's a Galaxy Ace (General)