Poor Vodacom signal

If I could give less than 1 star I would. I've been having issues with the Vodacom network for a while. I make calls, and the call stays connected but I simply cannot hear the other person speak. I've logged multiple complaints, which in itself is a mission since you cannot get hold of anyone to assist. This is not limited to my device only since anyone who visits have the same problem with calls 'dropping'. I even had to replace my device after getting so frustrated that I broke my phone. Vodacom, after the first complaint, sent out a technician who apparently fixed something in my area but the issue remains. I tried to log another complaint but no response. I cannot operate my business like this having to phone the same person back 5 times to complete a 3 minute conversion. Making calls from any other area is no problem. This only happens in Waverley, Pretoria. I've even noticed that I don't even get 5G. I get it everywhere else. If this persists, I'll have to move all my contracts to another provider. I've been a client for over 20 years but this is ridiculous.