Telkom acc unt disputes

I have been disputing my bill due to not getting the speed I pay for. I pay for 20 mbs and I am only getting 2 mbs. I have disputed this bill since 15 Nov AFTER technicians have resolved the line at the end of NOV as advised to do by telkom 10210. STILL no credit app**** to my account and still waiting for feedback. Totally unacceptable they quick to switch u off for non payment, but when u don't get Wat u paying for, no feedback is received.