Poor Service

Poor service and lack of knowledge. I took a contract with telkom last year for 40 gig and only to find out for the period of 17 months the have been loading only 20 gig. I went to their store at Northgate where I took the contract for WiFi after 2 months of my contract and they said it has been rectified. Today when I went to the store again I was told it was not done, meaning I have been paying for something that I don't benefit from it. I want action to be taken.