Delivery Scandal

I was contacted by CellC on Friday 04 February 2022 offering an upgrade at 50% less than than the current premium. Naturally I accepted and was informed that the new device will be delivered on the following Monday 07 February. I asked the agent to repeatedly if she was sure about the delivery date. (I have a rule for any supplier/service to repeat their promise 3 times). Also, that I could arrange for someone else to accept delivery on my behalf to another address. All they need is my original ID document, a copy of ID and proof of residence. (Again, confirmed 3 times). A week later I called CellC to request an update and was told that the device is out of stock. I called regularly to enquire about delivery and was told it was still out o0f stock. I called and visited several stores over the next three weeks and the particular device was definitely out of stock. Long story short: Now I get told that there is no one at the delivery address which is completely wrong on their system! (EG Instead of 25 Ajax Street, Puntstown - they have 1 Punts Street!!) And the delivery company is not allowed to deliver to anyone but myself!! Both the above confirmed 3 times with the initial interaction with CellC. I've insisted that a manager calls me as all I get from the call centres is the scripted responses. So far no solution in sight