After almost 4 years and still signal issues

This is not my first complaint about Vodacom on this forum nor is it the first one sent directly to them. This area in Germiston ( Delville) has a really bad signal from Vodacom. Callls drop or I miss calls without my phone ringing and it is not just my phone. My brother stays here when on business in Johannesburg and he is also a Vodacom customer. They responded before by stating they are aware and need to erect an additional mast. But nothing is happening. Apart from my own business, which is suffering. Vodacom has signal strengtheners they can erect. Is my business just not worth it to them?