The most useless customer service

I have a contract with Telkom,I decided to take an early upgrade so I was paying for 2 devices. I then went back to ask if possible to settle the old device and only be left with the new one. I was told it's possible, first I was taken from pillar to post by call center and rude staff at Southgate Mall,I sent countless emails,the manager also didn't resolve my issues. I was given a figure by the billing Dep,I paid the amount and only now I get an SMS that I can't settle one device. The most *********** people are at Southgate Mall now I paid about R4500 for nothing.