Worst service ever from a service provider across the globe

Disgusting service from Mtn.i had a contract with mtn and I have been paying for it until covid 19 shutdown and they block my number which I explained to them that the number was for business use and after that they convinced me to change the number into contract and after they blocked my line my business came across a highly unimaginable loss.They kept on contacting me that I should settle the 3 months so that the contract can end.The promise was once I pay the outstanding amount they would reopen my sim card but to my surprise the day I settle my contract they then wait for 2 days and gave my number to someone new and I lost customer base that I build in 12 years. I believe they is no such a waste product like Mtn and please trust them not because they are as same as a ****.