Retrenchment documents submitted

This is Nthabiseng Mokoena I had a HomeChoice account for almost more than 7 years. I've been paying my account on a monthly basis, up until we affected by this pandemic disease Covid19. My account went on arrears during lock down and I informed them that my salary had been reduced we made the agreement to debit R500. Then on the 28th of August I got retrenchment and I submitted all required documents at the branch Johannesburg, Rissik street. To my surprise I am now receiving calls more than 3 times a day from their collections department. Please help me there because I've been explaining to them it seems as if they don't understand what I'm saying. I am no longer talking to them when they call me. Your assistance will be appreciated.