Telkom incompetence

I am frustrated beyond comprehension. I have a pre-paid landline at home, Telkom phoned me to tell me that they are changing from copper to wi-fi, so I have to get the new phone that connects through wi-fi. That was done, and the phone was working perfectly, and I got a letter with my phone to say I will keep my number, and it will remain on pre-paid. It was working fine, and then for no reason they just cancelled my line. What the hell. I have been phoning, and emailing, and getting nowhere. First i was told I must phone accounts, they tell me they cant help me I must phone sales, then I phoned sales & there's 4 options, each option I dialled they tell me they cant help me I must dial back and press the next number, so I went through all 4 options. Then I got a sms that I must phone *** to get my number working again, I phone them and they tell me I must phone 10210, I phone 10210 and they tell me I must phone sales. I cant take this anymore, what the hell is going on at Telkom that NO ONE knows how to solve a problem. Why the hell was my line cancelled? WHY?????????????????????????