MRP online shopping - I did not receive my parcel and I have not received my refund despite proof of the payment

MRP has yet to send me the parcel (online shopping) and won't refund me despite my proof of payment. I ordered goods on MRP online on 16/03/2022 - order number ***39. I have proof of payment on my bank statement. MRP cancelled my order precisely one month later. I did not request the cancellation. As of 24/05/2022, I have not received the parcel two months later and have not received a refund, despite having sent all the information to MRP. The support desk has asked the same questions three times, and they are unable to resolve the query, despite me having sent the proof of payment and a copy of the cancelled order on the MRP system. They have indicated that they can't trace the order. Where is my refund? Is it doubtful that I shall get a refund? MRP's systems don't work well, nor does their support desk. My query is still outstanding over two months later, and I am left with no refund and no goods. MRP still hasn't gotten back to Hello Peter when I first lodged this review. I shall not buy anything else online from MRP.