Total disregard to paying customers

My contract WIFI router with Sim card was ****** and I have since Friday 26 November 21 calling MTN to speak to the contract department but never available or cant be reached. Every time I speak to the prepaid consultant I am given a different number to contact but nothing. some numbers are not even working. i was given the retention department number which does not even ring. One week now I still cant get my matter sorted. on 3 occasions I was told that an email was forwarded to the contract department to contact me back but that never happened.

Can Hello Peter assist please. This is too much. I use this for work