Return not deducted from my account

The new company (RCS) who took over the Edgars store is highly inefficient. I returned an item on my account on the 29 August 2020 and to date the payment doesn't reflect on their system. Instead I get countless SMS and emails informing me to pay my account. Why is nobody responding to the emails on the return. I called the call center and send through proof of refund and still waiting for their response. I will not pay my account until this is resolved as I am afraid even the payment won't reflect. I am really disappointed by the inefficiency of Edgars/RCS.