MTN coverage problem - no action

Coverage of MTN at our home has progressively been getting worse over the last months. Currently no calls can be received at our house,accessing the internet is equally frustrating. (Current signal strenghth reading: 112dBm 32asu) The issue was reported to the MTN coverage desk (ref ********** ) on 8 Jan. I followed up on 16 Jan. Still have not been contacted by MTN. In the meantime we are paying for a service we can't use at all at home. I bought a Vodacom sim today. No problems. It seems you want me to cancel all my MTN contracts or are you going to step up and sort this problem?