Poor customer care

I paid R494.99 with Nedbank EFT to ABSA - *** for order #4501to Home Hyper City. When i do a follow up i was told that they are still waiting for their payment. The 2nd March 2022 statement clearly shows that the payment went through from my cheque account.I managed to contact them with *** and they told me that the amount is still outstanding.How can you help me in order for them to supply the item to me or to do a refund.