Poor client service

On the 22nd of March 2018 I went to American Swiss in Musgrave to settle my account no ********** ********** 79974 of I did & I requested a lady in store to call Head Office to close an account for me. She did that & I was transferred to One2One department, I spoke to the consultant to close contract that I have with them because I never renew it, she agreed. I emphasized that I don't need it as I have 2 contracts with Mtn. After a month I was billed. I called them what was that all about? A White guy tried his best to sort out the matter but it was all in vein. I called them again & I spoke to a lady, she told me she was going to review recordings for 22nd of March. I agreed & I gave her my landline number as I'm working at the bank. She tried to call on my cellphone. I went to American Swiss again for a 3rd time & instead of reviewing the 22nd of March 2018, she made me to listen the conversation after the 22nd where I was complaining. I asked her where was the 1st recording as per agreement but she insisted it was that one I was listening. I emphasized that I wanted to hear my conversation between me and the 1st consultant I spoke to but it was in vein. Instead she said they will bill my account for the last time & then close it after 30 days & that I should use all airtime & smsez to a zero balance. She also said they'll live the number opened in order to use it for recharge. I disagreed because I didn't want to do with them anymore. I went home & we used all airtime as I was told to do so. Apparently I got an sms that I'll be handed over if I don't pay my account. Today the 23rd of June I went to American Swiss again & what annoys me most they accumulated debt doubled an amount of which I was supposed to pay. When a lady in store review account statement, there was a lot of fees which was charged as they wanted to hand me over. I'm just tired & drained about these people. I was told again to come back on Monday because One2One was closed. Please assist me with this matter because it is beyond my control. Regards Thembi