Service suspended AGAIN

For the past 7 months my service gets suspended several times a month and sometimes even several times a week. I have spent hours on the phone to cell c and still no one can assist me and this keeps happening. I have sent my proof of payments and bank statements with the amounts paid to cell c reflecting on my statements and still my line gets suspended all the time. I even have a number call me several times a week (+***) and tell me my account is in arrears, the arrears amount that they tell me ranges from R800 to R5000. Its mostly around the R2000 mark. When I ask them to email me a statement showing the arrears amount they put the phone down on me, so clearly they don't even know what they doing. If this is some **** or joke then its really not fair. Tonight my service has been suspended again, this is the second time this week so far and it's only Wednesday. No one has been able to help me as yet and I find it rather concerning that cell c management cannot step in after 7 months of the same issue over and over again. Shocking and unacceptable.