MTN bad network quality

Bad network quality at home. Calls dropped, calls not going through, logged technical queries, not one gets back to me, what's the use of having a contract if you can't call someone? The area I live all MTN subcribers are having the same problem, but how to get a technical person from MTN to come and test signal / tower I have no idea. Call centre also not much of help. I am seriously considering moving to Vodacom.