Absolutely useless service

Telkom has become the worst service provider in South Africa. I have a 10mb/s line but my average download speed for the past couple of months has been 0.35mb/sec. I have tried to open complaints and they have not responded to a single one. Their "customer service" if you want to call it that, is completely useless. For two months now they have been unable to resolve the issue. Don't get caught up in a contract with these people. I've had to use my cellphone to connect to the internet for 2 months now at huge expenses because the telkom adsl line has become so slow that I can't even open web pages anymore. Yet, I'm stuck in a contract with them for the next few months that i can't get out of.