MTN unable to fix billing query

I took a contract out with Nashua Mobile on the MTN network just before Nashua Mobile were extracted out of the market. Nashua Mobile didn't give me any paperwork. I took a contract to the value of R750 per month which comprises of 500 minutes. The first billing date was in November and everything was fine. From January they started charging me hardware fees which I definitely didn't accept when taking the contract. I tried to call the call centre to lodge a complaint but you don't get hold of these people!! The phone just rings. Then I went to the MTN franchise store in the Jaqueline Mall in Alberton. What a nice experience, I should add. Those girls called MTN and lodged a complaint. After the store had to call several times, MTN said I must show them my contract and I informed the store that I wasn't issued one. Then they stopped billing me the hardware fee. The next month, they started charging me again. The store then tried to call but they are still on strike. <br> <br> I am a client of MTN for 15 years and I spend about R1000 per month and this is how they treat me. I NEVER defaulted on a payment. If MTN don't fix this, I will take this further.