My Frustrating Customer Service Experience With Three
I thought I had bad customer service before but I feel this takes the prize.
Earlier in the year I cancelled my http://three.co.uk contract because I wanted to move to the iPhone. I called the 3 customer service line to cancel.
Then I kept getting phone calls from 3 asking if I wanted to upgrade. Each time I explained that I was moving to the iPhone and there was nothing they could say to keep me.
On the week of the iPhone launch I confirmed with a man in the retention team that I definitely definitely was cancelling. He claimed that while it showed in the system that said that I was leaving I had not put in official notice early enough so my contract had rolled over (I had never asked to continue and it was a 18 month contract, how bad is that?) so cancellation date would be August 1st.

Added: Here is Tweet I sent to that effect June 9th!
I wasn't happy but accepted perhaps I had not been clear when I said I absolutely definitely did not want to be a three customer any more.
Obviously I went ahead and bought the iPhone and gladly put my horrible 3 experience behind me. Or so I thought.
We got a strange bill saying I had money to pay 3 in August, strange because I had confirmed twice that my contract was over on 1st August. Today we called to cancel my wife's 3 contract and the lady said there was NO RECORD OF ME CANCELLING and I would have to give ANOTHER 30 days notice.
So essentially I feel like 3 has scammed me out of months of money for providing zero service and I have no guarantees that they have even cancelled this time, after all this is the third time I have tried to cancel :(
Any advice?
Added: I am told I am risking being sued so I have edited to ensure that I am only reporting my facts and feelings in the matter.