Expired contract Lines - Account number ***

I have 2 contracts with Telkom mobile which both have reached the 2yrs contract period. I went to their branch at Maponya Mall in December to inquire about my contract statuses and was adviced that only 1 of them had reached 2 yrs and the other one was expiring in march 2016. <br> <br> to my surprise when i saw my billing for Jan2016, I saw that I was billed R562 for a R299 contract and when i asked I was told that the contracted had actually reached the 2 yrs period and thir system was billing me on \ the next best amount is assumed the contract will be "currently? So I asked them how do you increase my contract amount and double it? for something I dont not have and not using? <br> last weekend I went to Maponya Mall again to close all the account "