Impossible to cancel contract 5

Yet another week has gone by - this is now my 5th week of complaining on HP after a month previously of no response. Every week, I get a response saying my issue has been referred and I will get a response - every week, I get nothing. Been trying to cancel a line since the beginning of October and not had one response from Telkom to around 25 emails. I will get another response to this saying you'll hear back from us and next week, the same thing will happen. So whoever is going to respond, please provide more than a standard computer response and actually tell me what I need to do.