BAD BAD Service

I am very disappointed in Vodacom. I have taken out a data contract with Vodacom of 50gig any time and 50gig top up plus a 50gig night owl. Total of 150 gigs. For the past three months I have only received half of the day time data. I have complained to their customer call centre on a number of times, I have even went to Midrand to Vodaworld to try and sort out this problem and still nobody can help, they just escalating the problem to the next department. I really do not have any joy what so ever from Vodacom. They promise that a consultant will come back to you but nothing just empty promises. Wish I could cancel my contract with them.