No network service from Vodacom

For the last 2 years our Vodacom network service in Melrose, Johannesburg has been very, very poor. Now we can't make or receive calls most of the times and when we do get a signal it is very bad connection. My neighbours and I have logged complaints via mobile online chat as we can't make a call or email as the email service is not available on the app and Vodacom is always working on the problem but it is not getting resolved.