Contract sim rica barred

I have never experienced such bad service as I experienced from MTN. I have a contract with MTN and after doing sim swap it gave me error: sim card is RICA barred. The list of excuses as to why my sim card is not working is endless. I went to MTN store, I've called 808 twice *** and ***. I also send them an email #*** and still my sim card is still not working after three weeks after doing sim swap. MTN is *********** and does not have a clue what customer service is. For them every customer is just a number...