MTN CHANGING POLICIES AS THEY GO ALONG

I took out a wifi with MTN about 3 months ago. MTN told me that the contract was on a month to month basis. By month 3 I was admitted in hospital . I saw no need to pay for a service that I was not going to use. On the 20th of May MTN deducted to said amount from my bank. But they did not switch on my internet. Went to walk in centre. They told me that I have to wait until 1st July before they could set me up again. I told MTN that that was not the agreement. When I signed up with MTN they told me that could skip the months when I won't be using. All of a sudden the consultant told me that MTN,so policy was changed two months ago. That was not the deal I signed for. Come on MTN GET REAL