Mtn bad service

A few months ago my partner got a call from mtn to upgrade to a *g day and *g night data contract for a R***.** a month she told them to call her back a hour later as she wanted to check with me if it will work as i use about *g data per week. I then told her to go ahead and the contract was setup. Everything was f* until i ran out before ** days. My partner will then shout at me as she told me u need to use it for work only i rep**** i do. The other day i said to my self im not gonna use it because its to strange that *g data only last ** days. I took the data sim out of router and put in a phone to check and was shoked to see i only recieve *g day and *g night data. We where given false info on product.My partner calls mtn and get put on hold for more then **min a time just for someone to drop the call. She have been contacted mtn more then * times in a row.The last person to speak to my partner requested a recording of the contract but we are being put on hold everytime just to get dropped again. 2 weeks ago a lady called us from mtn it was told that she will investigate the issue. I was so what happy that it will be resolved. Have not use the data since. Didnt even get feedback or nothing up till today. On top if it they take my money by debit order and contract is for R129.00 but debit order go off every month of R135.00.