Dissapointing and disgusting Customer Service

I ordered 3 items (1 x Arm Pouch, 1x Skullcandy Dime True Wireless Earbuds & 1 x 20Kg Vinyl Weight Set) on the 4th of March 2022 from Mr Price Sport on their Mr Price Money App. As the 20Kg Vinyl Weight Set was very heavy, they delivered these separately (apparently they use a different courier for the larger items), and later on that day I received the Arm Pouch and Earbuds. However, the Earbuds box had clearly been opened previously, and the charging case and Earbuds were not inside the box - only the charging cable and earbud replacement covers were present. I reported it immediately to the Customer Care Department and send them photographs of the item. They arranged for a courier to collect the item (for which I received no paperwork) and I emailed the Customer Care consultant (Kumeshan) that I had dealt with, to let him know that they had been collected. To date the amount of R699.99 has STILL not been credited to my account for this item. To make things worse, they DUPLICATED the purchase for the Arm Pouch and Earbuds on my account (total value R769.98) on the 8th of March 2022 - I had already been charged for these in my original online purchase on the 4th of March 2022. I have emailed, called and Whatsapp'd Customer Service in this regard on 4 separate occasions. Each time they say that they will get a manager to sort these issues out, and I would receive an email confirming this. TO DATE I HAVE RECEIVED NOTHING AND HEARD NOTHING BACK FROM THEM, AND IT IS OVER 1 MONTH SINCE MY PURCHASE. I think that this is absolutely DISGUSTING AND DISAPPOINTING customer service. I honestly don't want to purchase anything further from them, if this is how their customers are treated.