Claiming for additional funds

This is a sick company, Colmed Debt Administration. They harrasing me for payments that was done during covid 19. I paid the doctor the full outstanding amount of R358.0 0 on 31 May 2020. I am getting phone calls and SMS to another R461.00.

Where does this sick company get this amount from. I emailed proof of payment to Marelise Joubert whom is rude to me and bulling me to do further payments for what????. She call me Twice a week and even disconnect the call.

Please i am humbly requesting for help to resolve this matter.

Please can i get help to resolve this matter