Poor client service

I have been a client of VOX for just over 2 months now. I have paid for 2 months service (at an incorrect price, as they did not apply a promotion price to my contract) and I have been offline for almost a whole month of these 2 months since quering my incorrect billing. No department within VOX is willing to assist or take responsibility. I have called out over R130 in airtime to VOX as they never call back when they promise to do so, and do not communicate in any way to me as the customer, meaning me, as the customer has to phone on a daily basis to find out what is going on.

For the month of September I have paid in advance my premium of R599 (which should only have been R380 based on the promotion), and I have not had any coverage in the month, and I am assuming getting a refund or credit to my account is also not going to be an easy process.

They say they are "a leading telecoms operator" but based on the client service they provide they seem to be far from it.