Harrassment

Hi have been called every day since July and 10 to 15 times a day for an account that is in arrears. When I answer and I ask them to tell me when I went into arrears I get a response oh sorry I see you made a manual payment and every time they say they will escalate to the back office. I once spoke to a TL called Leatin who promised to sort it out and send me a statement.. this is the second month that I am waiting for a statement. He also told me he will exclude my account on the dialler. This clearly didnt happen. Last week I decided to answer one of their calls and I also asked for a statement which I still didn't get. I will never use their facilities again. I have been harrased for 4 months without any resolution and assistance from their side.