MTN do not respond

I got a sms to say that MTN has increased my credit limit. The sms stated that if I didn't want it I should reply no. I did this and 2 days later they increase the limit again. I SAID I DON'T WANT TO INCREASE MY LIMIT!!!! <br> <br> I was also asked to swap my sim to a new LTE sim. I go down to the shop wait in the line and then find out I need my ID or Passport. This was never communicated to me. Thank you MTN for wasting my time. <br> <br> Since MTN took over my contract from Nashua mobile I have had bad service non stop and this is enough now. Once my contract is done, I will take my business elsewhere.