Months of poor service delivery

For the past 3 - 4 Months the connection quality and speed for Vodacom LTE has been pathetic. Even though it tells me that I'm connected on 4G and have 2 - 3 bars of signal, my average speed test to a Vodacom server is about 2Mpbs.

After logging several tickets with them, they have still failed to fix the problem. I've even been on a particular phone call where one of their staff members told me, that if I'm going to continue logging tickets for the same fault, I might as well go somewhere else, and cancel my contract. This is after telling them that there are many people in my area complaining about the same issue.

I am completely and utterly flabergasted with the service they deliver to their customers, they are completely happy with taking my money every single month, but, when it comes to actually delivering the service I pay for, they refuse. In their Terms of Service they say they offer a "Best Effort" service, and I'm telling you this is a far cry from "Best Effort".