Bad Service No Network Coverage in Broadacres

We have been calling the MTN Network Coverage number *** every other day for the past 2 weeks to advise that we do not have coverage in Broadacres and today this has not been resolved. Today I called and spoke to Ruben and he advised that their Engineers are working on the matter. In the morning my wife called and was advised that Huawei will be attending to same but till now no joy and it has been 2 weeks with no network or 3/4G for internet. I work from home and this has really affect me because when people try calling me its always on voicemail. I think this is time to change networks as we are not HAPPY with the service being received from MTN and I understand Vodacom has better rates and coverage??