Unprofessional service

Good day I have been struggling with MTN since March 2020 after there system update. Struggling to get service from any consultant. I noticed om my ITC report that my Mtn account was closed in January 2020 without any notification or any consent from my. I still make my monthly payments on my contract. Very unprofessional. Very very unhappy with the service I am currently receiving. I am a client for almost 17 years.