Order of 4 x Cereal boxes over 48 hours late

Ordered 4 x boxes of Nutristart Cereal on Sunday evening and chose delivery for Tuesday 26 September between 15:00-16:00. It's now Thursday morning and I still don't have my order. Social media teams promise to get back to me, never do. Called CS twice, both explain technical problems with order system at the warehouse. Was told that my order was on it's way and would arrive shortly (Wednesday @ approx. 16:00), nothing. This morning my call was answered within a minute. Was put on hold numerous times and after 12 mins I put the phone down. Requested the order be cancelled and a refund paid... Pick 'n Pay, this is unacceptable and I will not use your online service again. If I could rate it 0, I would.

Please locate Nutristart Cereal (not Crunch) for me as it's not available in-store at the Summerfield store (Boskruin, Randburg) or at the Randridge Mall store.