Complaint about Cell c

I have been a cell C customer for years without any problems since last year November. I was contacted by Cell C get more and offered a package in September last year which I told the consultant that she must phone back the next day, because I must speak to my husband first. They never phoned me, October went past and in November with my cellphone contract they added their amount. I had to dispute it because didn't agree to it. After many phone calls get more said they will have to go and look at the recording and will get back to me within 21 days which the never did. I phoned and the apologised and said they will get back to me which they never did. The next month it was the same thing and I had to go into the back to dispute which cost me R70. I phoned get more again in which the said I must cancel the service which the should have told me from day one whilst looking for the recording. Know according to them my account is arrears more than R3900. I phoned cell C the gave me a ref nr to make my normal monthly installments and only to find out it is on the wrong contract. The opened a case number and every time I must phone back and explain everything to them. When I asked to speak to previous consultant I was told they are a big company and can't help me. I had to send proof of payment twice because apparently it doesn't show on the system it only show in the email I send to the specific consultant which I can't talk to. BECAUSE of people not doing their work properly I get a bad credit record and alot of stress over issue that is not getting resolved. The send an sms saying my phone will be suspended I'd don't pay that amount. It seems nothing is happening and how can they expect you to phone them and each time its a different consultant that doesnt have your proof of payment. Never had such bad service from cell C.