Poor customer servive from Edcon Group

On the 30/04/2020 i paid for my account via a link from MBD because of the lockdown as all places were closed at that time. It is now August and my payment is said to be not reflecting on their side. I have spoken to several people via email at the edcon group regarding this but nobody has been able to help me. I am beyond upset with this matter as it is now been full 3 months gone and nobody can track my payment. I have proof of payments, emails, and screenshots since the month of May. I took a decision to stop paying for the account untill they find my R1500 but im also fearing for my credit recors