Worst service provider

I fail to understand that my wifi doesn’t work when i call the stuff is confused about the unlimited deal its been 3 days now n im expected to pay R1600 end of the month.When a payment is mixed we are expected to pay interest no im out of wifi for 3 days im sure i will not reciprocate any extra data. Telkom is the worst service provider ever and when im at work i dont have network in a CBD its not even like im in a rural area or location and when im at home i dont have wifi so now im expected to buy data im really feedup