Pathetic service from Cellc

As a client of cellc for over 20 years I am appalled at the service I have received recently. My contract line is due for an upgrade but I have been pushed around departments and spoken to countless agents to no avail. Cellc are adamant my profile has been flagged and can therefore not update my profile on their database. This is utter nonsense as I am not under debt review or have any defaults on my name. I have provided an updated credit report and a clearance letter but they are still refusing to assist. An agent sent me an sms to call a debt company who have asked me to PAY R3000 so that they can remove any negative remarks that cellc has on my profile. This is bribery at its best. Moreso ...I upgraded my other line with Cellc 7months ago with no issues. It's hard to understand why suddenly it's a problem when nothing has changed on my credit profile. I have an excellent credit rating on the credit bureau and Cellc should maybe update their systems as they are the only ones with an issue. I think it's time to migrate to a better network that values their customers. I am disgusted#Cellc sucks.