Overpriced Vodacom Fibre

Overpriced with pathetic service. I'm paying R650,00 for a 10mbs fibre line. Vodacom is the only service provider in my area. Other service providers offer the same fibre line for half the price of Vodacom. Unfortunately Vodacom has laid the cables and only they can offer the fibre service. Most of the time the line offers speed of 6mbs with a lot of buffering. When you call customer service, they reset your line and for a couple of hours you get 10mbs, after that it goes to 6mbs or 4mbs. Really feel **********.