Whatever you do demand compensation for any subscription time you've pre-paid on the account. If you pay every 3 months and have another month to go then demand that money back.
And as the other people here said demand evidence from them and inform them that legally they are obliged to provide said evidence *before* voiding your contract. Also inform them that if said evidence cannot be brought forward that you will take them to court over breach of contract. It's really not that hard to do nowadays and will cost them not you if they can't provide any evidence.
They're just hoping that none of you people they're doing this to have any clue of contract law. Go to your library and ask for a book regarding UK contract law. It's practically identical to Irish contract law which I've spent the last 4 months studying. It's not that hard to get the basics and is well worth it for anyone to know no matter what your situation is.
The onus is on them in this situation to provide a case against you in order to void your contract with them. Nothing they can put in their terms & conditions can change that.
The bottom line is that they can cancel your access to
THEIR servers whenever they like and without warning.
They also don't actually have to give you any reason because, it is their system and up to them who they allow to play.
So no you cannot demand such information from them (well you can, but funily enough I think they will laugh at your demand).
However by terminating your account without reason you are right in that any fees you've paid in advance you would be entitled to a refund on.
They have actually given you a reason, so this negates their requirement to perform a refund - as long as they can prove what they have said.
At the absolute best the OP has paid for 3 months access and is owned 2 months as a refund.
To get that refund it will involve them constantly saying it happened and him constantly saying it didn't happen.
Worth a day in court for £20?
Principle or not I think there comes a point where most people will just call it a day and to be honest....rightly so.
If the OP is 100% sure of his innocence then he should be attempting to get his account re-instated.
However as Blizzards T&C's say - the security of your PC is your own responsability.
If something has happened with the account in question it was either:
1. Hacked - Unlikely, if there was a known way of hacking WOW accounts then they would be done regularly.
2. Accessed Illegally - Key logger, phishing, shared information, weak password - Covered by the Blizzard T&C's on PC security.
I wouldn't have thought you'd be getting the account back in a hurry.
, that doesn't look good, is there a chance I can get my acc back ?, who do I contact ?, I'm not a happy bunny 
, no warning nothing.
