False advertising on MTN Internet contract

We were excited to take out an internet contract with MTN as it seemed ideal and we were also as a bonus promised a R1000 voucher for Makro. That never worked. But that is not the major issue. We were never told that with a month to month contract we have to pay a month before , not behind like a mobile contract. Due to this we didn't not have internet for Feb month. After paying and paying amounts that MTN said we owed we were informed via email and the consultants at George Mall that Feb payment will be taken for March account and we would have internet. This has not happened and we been struggling to connect for March. We thought it was the modem, they changed the settings, after days of being on the phone with consultants they said to bring modem into the shop, which is difficult for me to do as I have cancer in my spine.. but I did it and we went in. It worked in the shop at George garden route Mall. We get home and plug it in and nothing, still no internet! So back we go to messaging and voice noting. They then said out tower in our area seems to be a problem. I then got an email from MTN saying we won't have internet for march as we paid late... When they confirmed on email last month that Feb payment received is for March and will have internet. We were told to pay on the 4th of the month, which we did for Feb and March but in the email they now say we should have paid on the 1st. This has been a very stressful and painful process with MTN, so much so that we will be canceling our contract. Now to do this, we have to hand in the modem and all cables, we will then again not have internet for the cancellation month.. but need to pay for it. This is false advertising and very disappointed in MTN after being a client for years. I am sure I have left alot of info or conversation. There was so many and was really happy with the 2 consultant that tried their best to help but they can only do so much!