poor customer service

I had requested my game and spitz account to be closed and be mailed a letter to prove of closure fot both accounts. I wa told my accounts will be closed in 30day on the 10th October when statement closes, I waited and since statement closed, I had called the call center more than 4times requesting proof of closure, I am told I will receive letters of closure before close of business every time I call them...I wonder what will it take to get those letters