Loosing my job as MTN is not helpful and valuing clients

Worst Service ever!!!!!!!! being a client for over 6 years and during this pandemic we going through MTN has done nothing but drag its customers down. Don't know how many times i've been trying to communicate with MTN and making arrangements with them through this pandemic journey and everytime i would hit brick wall.. I eventually managed to call them and make arrange and yet i find myself in a position whereby i cant even do my work as they've closed off my line. I still call them and tried making arrangements and still not getting any communication, i have reference numbers that are given to me and yet no one can assist. as per conversations with their consultant their SLA is 24 to 72 hours and yet its been over that and i still cant do my work.. Am about to loose my job as i haven't been able to work for the past week :(