Was changed to monthly billing however, got a bill due on 9 October which was paid on the 7 th. Then got an e mail on 19 October stating that the amount was due. Phoned to explain that the bill was paid on 7th and asked why, 12 days later, was the bill sent. I was told to ignore this as my account is actually in credit! Hope this isn't a theme and my credit rating is not going to be affected!