SSDA IS A ****

I paid my MTN Account that was handed over to SSDA it is way passed 21 Day and under credit it shows that I still owe MTN. I tried calling, whatsapp and email and till to date I have not received feed back or my paid up letter. I feel ****med and always suspected this company is *****. They can respond here but it will only end here because they want the public think they are legit.