CONTRACT BOUGHT OUT BUT ALTECH HANDED ME OVER!!

I REQUESTED A SETTLEMENT LETTER ON THE 25.05.15 WHICH WAS E-MAILED TO ME I IMMEDIATELY PAID THE SETTLEMENT AND SENT THE PROOF TO ALTECH ACCOUNTS. THE REASON FOR ME BUYING OUT MY CONTRACT WAS THAT MY AIRTIME AND DATA WAS DISAPPEARING FROM MY PHONE AND ALTECH CALL CENTER COULDN'T TELL ME WHY AND REFERRED ME TO MTN AND THEY WOULD SEND ME BACK TO ALTECH I GOT FED UP AND DECIDED TO BUY OUT AND CANCEL. ALTECH HAS LISTED THEMSELVES ON TRANSUNION AGAINST MY NAME AS BAD DEBT WHICH I HAVE ALSO BEEN TRYING TO CORRECT WITH THEM AS I SETTLED ACCORDING TO THE SETTLEMENT LETTER THEY GAVE ME.NOW AN ATTORNEY CALLS TO LET ME KNOW MY \ACCOUNT"HAS BEEN HANDED OVER!! I DON'T OWE YOU ANYTHING YOU ALTECH OWE ME!! YOU NEED TO FOR THE 100TH TIME PLEASE REMOVE THE INDELIBLE MARK YOU MADE AGAINST MY NAME WITH TRANSUNION AS I OWE YOU NOTHING AND STOP HARASSING ME. I HAVE ALL THE PROOF OF EVERY E-MAIL EVERY PAYMENT AND I HAVE THE ORIGINAL SETTLEMENT LETTER AS WELL GET BACK TO ME ABOUT IT SO I CAN GET YOU OFF MY BACK!! IF YOU NEED ASSISTANCE IN YOUR ACCOUNTS DEPARTMENT I AM AVAILABLE AND CAN PROBABLY DO A BETTER JOB THAN THE WHOLE LOT OF CLERKS YOU HAVE THERE. I WILL GO TO THE CONSUMER PROTECTOR WITH THIS CASE"""