Pick n pay ASAP services

Ive placed an order on the ASAP app at 13:45 on the 9th of November order nr *** after 2hours the app kept changing the delivery time eventually to the next day, ive spoken to several call center officials and canceled the order 16:45 even after they tried to contact the branch where it was supposed to be dispatched from with no feedback. Around 17:30 the order was delivered. I phoned again and arranged with a call center official to collect/return the goods and requested a refund as we already got the groceries from a different store and no longer need it, also there was an item on the order missing after it was amended the amount charged stayed the same. Its been 10 days after several phone calls and attempts from my side and this issue has still not been resolved, no collection or communication from them even after several reference numbers and complaints online. Some the items ordered has expired and cant keep it any longer due to health reasons. Very disappointing service from a known and trusted store.