Payflex - poor assistance with query

I bought two items from Woolworths online on the 20th & 23rd of May 2025 respectively, choosing the PayFast method of payment. The 1st payment for both of these transactions were collected on the date of transaction. I returned both items to the Woolworths branch in the Southern Centre, Bloemfontein on the 30th of May 2025. The store refunded the full amount of the items on my credit card, which to me seemed incorrect. As from then, Payfast are still collecting the payments for both transactions. You cannot get hold of them telephonically and the online assistant is utterly useless. I received e-mail correspondence ( I had to wait 72 plus hours) from Nikita, however the issue has not been solved. She tried calling me, however the call cuts off. They are still collecting the payments. My last e-mails were also not answered.