late online order delivery, lack of service with call centre and store

I placed two online orders dated 29 November 2022. Order Nr *** Order Nr *** Both orders were placed within minutes of each other, one I paid via my account and the other using my debit card. The debit card order which was placed after my order through my account, this was delivered and collected at the Store on 6 December. Both orders delivery date was stated Tuesday 6 December, and only one order has been collected. I asked in the store where is my other order and I'm simply told it's not here yet. This morning on Wednesday 7 December, I tried to call the call centre and the message is they are experiencing high call volumes. I ended my call as I don't have airtime to waste. I then went onto my app and tried to chat to a consultant on their live chat, again high call volumes online and I am still waiting for someone to respond ten min later. The courier company used is clearly ***********, this is not the first time I have had orders not delivered to the store at the mentioned date on my invoice. No one is ever helpful and all I get told is it's not at the store. I have had it with this lack of service.