If you don't like our service, you're welcome to leave

I complained to Vodacom about non-existent coverage at my home address. They tell me that there is a new tower planned for the area and cannot give a time-frame. Apparently, It could be anything from 6 - 18 months, or even years. They no longer look to help customers (my wife and I pay over R1, 000 each per month) by installing signal boosters, although I'm told I can go and spend more money with them by buying one from a Vodacom store (seriously?!). If I don't like that, I'm welcome to port to another service provider. What kind of pathetic excuse for customer service is this? I would expect it from Telkom, Eskom (pick your own SOE), but surely not from a locally-listed subsidiary of a multinational MNO. I've been a loyal customer for 15 years and now I feel nothing but anger and contempt.