WILL RELIABLE STORE PAY ME WHAT THEY OWE ME AFTER 5 MONTHS?

WILL RELIABLE STORE PAY ME WHAT THEY OWE ME AFTER 5 MONTHS? Regrettably I am a most disgruntled customer of Reliable Store having tried to get a refund from them for over 5 months on order number 21445 The original service was adequate although my online order was delayed – I made allowance for Covid -19. Unfortunately, the online order details misled me and the item I purchased as a gift for my grandson was totally inappropriate. I requested a refund and although the conditions of a refund were punishing I chose to proceed One of the conditions was that I return the goods at my own expense to the supplier in China who I had had no previous dealings with. I was eventually able to ascertain an address for Reliable Store in Roodepoort and I travelled from Edenvale and returned the goods to their depot where on my insistence they gave me a delivery receipt. I subsequently received an email from Reliable Store to say that they would refund my money but that a handling fee of 30% would be deducted. I reluctantly accepted these terms having voiced my dissatisfaction. I have now been chasing the refund for close on 5 months and I continue to get automated responses to my emails indicating that they will respond within 24 to 48 hours. This never happens. Please note that there is no response to the phone number provided for “customer service” which has a voice message saying that you must contact them via email. I have all the emails on my laptop including one sent yesterday. All I want is my money back for the goods that I returned to Reliable Store. After 5 months, I feel entitled to interest on the money owing. I would strongly recommend that people should beware of dealing with this business. Do you think I will ever get paid what Reliable Store owes me?