Telkom Customer (we don't)care

Data usage on my router is incorrect, I loaded a bundle that should last a week and it was finished in 2 hours when I wasn't even at home. I called four times into the call center, "system is offline" and "just load more data" is the only response I get after wasting airtime. No one cares, no one logs a fault. Finally the system is up and running and all I get told is that the data usage for the day is 17GB, which is crazy because I use 50 - 60GB a month. I've checked all my connected devices and nothing comes close to the usage they report. The worst part is how useless the agents are, how unwilling they are to help or give advice, and how much airtime I've wasted trying to get an issue resolved (let alone data costs) S#!T service from a S#!T 'service provider' and they don't care because I'm locked into a contract