HARASSMENT OVER AN ALLEGED COMMITMENT

MY WIFE RECEIVED A CALL FROM A MYCOM AGENT LAST YEAR TRYING TO SELL HER PRINTER INK. SHE WAS TOLD NO OBLIGATION IF SHE WAS NOT HAPPY, JUST RETURN THE GOODS. NO CONTRACTS WERE SIGNED. THEY HAVE APPARENTLY HOOKED HER INTO A DEAL INVOLVING 40 CARTRIGES AT AN AVERAGE PRICE OF R1000.00 EACH OVER A PERIOD OF TIME. WE HAVE RECEIVED AND PAID FOR 2 SETS OF 4 BUT CANNOT USE ALL THESE INK CARTRIGES. HER PRINTER WAS THEN ****** SO I TOOK UP ONE OF THE SETS FOR MY PRINTER. I HAVE TRIED TO CANCEL WHAT EVER AGREEMENT THEY SEEM TO HAVE BUT AS TYPICAL SALES PEOPLE THEY ARE RELENTLESS.SHE DID NOT SIGN ANY DOCUMENTATION. THEY SAY SHE AGREED VERBALLY. AT NO STAGE DID SHE COMMIT TO THIS R40,000 ORDER.WE DO NOT WANT ANY MORE INK NOR DO WE WANT TO HEAR FROM MYCOM.WHEN I ASK TO SPEAK TO A MORE SENIOR PERSON I HAVE THE SAME REPLY OF THEY ARE THE SENIOR PEOPLE. PLEASE HELP.