Bad service from vodacom

We are very unhappy with vodacom. They came to our home to sign a contract with us for a 20/20 line (uncapped, unshaped, unthrottled) @ R1000 p/m, just to find out today after having bad service that we have a shaped line!! They also told us the first 2 months will be free...when we phoned in for another request they informed us of an outstanding amount of R2000 !! We're going to cancel our contract with vodacom because this is just ridiculous service! Very disappointed in vodacom