Bad service and feedback

I am a red advantage customer for a few years now. I recently moved to a new house in Polokwane. Since I moved into the house I have no signal or data coverage in the house and garden. If I walk 20m from my house in ether direction I have signal. I logged a call with customer care Ref No: A1X6YQ-Z622AH. they said they will give it through to their Technical department. Today (28/07/2015) I get a call back and the lady say the technician advised her that they are aware of the problem in the area I stay and the only thing they recommend is that I must wait a few months until they build a tower. My problem is that it is just in my house where I have no signal but 20m away there is signal. How can they be aware of that if no one even came to my house to do tests. I am a Divisional Manager and have 16 branches under me. From 17:00 till 06:00 I have no signal and cannot communicate with my branches or my superiors unless I walk into the street. One of my shops had a armed ******* and I only came aware of it when my superior Whats app me. My company pay half my bill and it is expected that I am available at all times. Seems like Vodacom just took the easy route by telling me I must wait