Pathetic service

I had a router contract for 24 months, call MTN on the 9th of January to check the status as the 24 months was soon to come and they told me its going to get canceled on the 11th of February and transfered me to retensions department where they tried to do an upgrade and the guy said he will phone me in 2-3 hours which he never did. I called again and was told the upgrade was not done and I requested for the current contract to end asti know u always need to give 30 days notice but was told its not needed as it will automatically cancel. To my surprise the router was still working on the 12th and I called to my surprise the cancelation is not done and they put me on a month to month contract ofwhich I never agreed to and hence I called to make sure this is canceled and now I'm billed way more than I was paying how???I need this contract canceled as in yesterday especially when I received pathetic service yesterday, I was transfered to 3 departments and nobody could help after having to explain myself 3 times, the worst part was the last person who cut the call on me while I was talking. Please urgently cancel this month to month contract that I never agreed on, we are always told the calls are recorded, please go listen to all the calls where I requested not to continue with this contract.