I joined Giffgaff in December 2012 and was initially a huge fan. 12th Jan, snow falling and I needed to let my sports group know whether or not the event that evening would go ahead as planned. I sent a text to all 812 members of the group. Result - my account, which supposedly included unlimited texts, was was blocked on the grounds of SMS abuse - permanently. My £12 month's advance subscription plus £10 top up gone. Giffgaff were unable to identify which of the terms and conditions I had broken or specify an acceptable limit to my 'unlimited' texts. I am not a spammer or using the service to market or sell any product. Customer services was frustratingly slow, totally unhelpful and irritatingly cheerful.