CELL C CONTRACTS USELESS

Hallo, on the 21st of April I spoke to Precious ref *** to get my contract paid up and settled so I can go to a R0 balance and upgrade again. The amount of R666.00 was paid on the 21st of April. On the 25th of April customer services informed me that they have indeed received my payment. I then spoke to Customer services, cancellations department, upgrade department and Retention department to get my contract to a R0 balance, no one could help me they informed me that this can take up to 48 hours, it is 2 weeks later and still my contract is not on a R0 balance. I spoke to numerous people namely Bridget, Precious, Welda, Amy, Robin, Refilwe, Tandeka, Felisha etc. No one can help me to get this contract on a R0 balance! I want this sorted out TODAY!! I want to upgrade but with this incompetence it is highly unlikely that this will happen before my actual contract term ends!! TODAY or I move my business elsewhere!