Suspended Cellphone line

My cellphone was suspended by Telkom Eita but I have paid them their money in full and this is the second time this is happening when I call their call center I was first answered by another lady in the name of Zama but I have forgotten his surname and she gave me a very bad attitude I asked for her manager and she refused I ended dropping the phone they tell me they can't unsuspend my line because it's done by the system even if they see the payment I still have to wait for 72 hours imagine that I am running a business with that phone and my account is up to date but the service I'm getting is disgusting, the other guy I spoke to yesterday told me that they get these kind of complaints everyday and they escalate them to their management but they do get any response. Please assist me this is very bad for business from Telkom, I'm very disappointed they such a big company but the service is ridiculous.