SHOCKING SERVICE - NO REFUND FOR NON-DELIVERED ITEMS - 18 DAYS LATER!

I ordered a specific product together with other groceries on 21 February 2022. The groceries arrived, but not the specific product. After phone calls, I eventually (many hours later) received the "product" - it was not what I ordered and over R40 cheaper per product than what I paid (I bought 2 of the same items and therefore received 2 of the incorrect items). I notified PNP on 21 February 2022 for the driver to collect the incorrect products and arrange a refund. He only arrived later afternoon after 5.30pm on 23 February 2022 - 2 days later! I requested my refund AGAIN, and am STILL waiting for my refund - 10 March 2022! I have MANY phone calls and sent many emails to PNP ASAP, but everyone apologies and "PROMISES" TO SORT OUT THE MESS - yeah right! I have probably spent more on airtime than the cost of the items! I was told I will not be reimbursed for my airtime, but "apparently" the refund is on it's way - but I must wait a few days! HOW MUCH LONGER! PNP ASAP has lost a customer! UTTERLY SHOCKING SERVICE!