Very frustrating!!!

Total confusion when it comes to this order. I ordered a Alexa echo show 8 2'nd gen. It was supposed to be delivered 28 December, and after waiting a bit, I phoned to hear if it will still be delivered on the day. I was then phoned back a bit later to inform me that you do not have the device in glacier white any more, and if a black unit would be okay. I agreed, and was told that it should be delivered roughly 31 December. On 2 January I phoned numerous times to check where the package is and was informed that you do not know where it is, but eventually (after many calls) the courier delivered the package. This is where it gets very frustrating.... I opened the box, only to find that you shipped the wrong unit! (What arrived was the echo show 5 and not the echo show 8 I wanted for my Wife with vision problems) I do not want this unit, and want you to take it back and send me the unit (any colour) I ordered. This is for order ***