MTN BAD SERVICE

I had a month-to-month subscription for a home internet. (router) with MTN According to their terms and condition I have to give a 30 days' notice. I handed the router back on the 6th of Feb 2025 at the sales lady at mtn who helped me getting it. I made her sign the letter of receipt of the router (as they took a photo of me holding this router) Giving now my 30 days notice. First from her side she said she gave it through and saw the system didn't update it (3 days back i spoke on WhatsApp with her) This is not my problem. Then all of a sudden, I got a SMS from MTN saying they will cancel it the 03/05/2025! what is this? This is not 30 days. Then out of the blue this morning I got an SMS saying the cancellation date is now the 03/06/2025 and I will be billed accordingly!!! This is unacceptable. I do not even have the router anymore. They are not keeping to their terms and conditions. I would not advise anyone to ever get a month-to-month router from MTN as they don't keep to their t's and c's.