TFG relationship with One2one bad!!

I have an account with Foschini group. I then took a cellphone data agreement with one of their companies One2One which was for 2 years. I opted not to renew the contract at the end of February. I was told by One2one agent that they will ask MTN to change my number back to prepaid. My number has since been deactivated from 27/03/2019 to date, meaning I cannot make nor receive calls.(missed out on birthday messages,calls on the 8th April.) One2one said MTN is experiencing system issues hence the delays. I went to MTN shop and found that my cellphone number is registered under The Fochini group(TFG) and was advised that TFG need to release my number back to MTN so they can activate it. As per MTN, no system issues with them.TFG please release my number ASAP.