Edgards lack of support and harassment is intolerable

I had closed my account at Clearwater mall end January 2020 as i have immigrated. The account was paid up. I am now being bul**** and harassed for an outstanding payments of costs that have accrued for insurance and club fees. I had returned to SA and again engaged with them on this matter and have at least 20 emails asking for assistance. There standard response is that they have no record or cannot trace my details ( EVEN WITH A COPY OF MY ACCOUNT AND STATEMENT)but yet they continue to send final demands to my SA mobile. I have also now seen a purchase on this account . Please can anyone assist as they are just so unprofessional and do nothing but send automated responses. From various groups it seems this is very very common and there are many ex SA's who are experiencing the same .