Incorrect order received late

My wife and I ordered and paid for a product from Essential Mouldings on Monday 28 November 2022. They state on their website that their standard lead time on all orders are between 4-5 working days, hence we expected delivery on Friday or latest Monday the following week but this did not materialize. I started calling them to follow up on the delivery date as we had contractors at our house waiting for these products but every time I called Louis told me that we'll have it the following day. The products eventually arrived at our house on Thursday 8 December 2022 and the contractors started working on it immediately as neither myself or my wife were at home to receive them. When we got home that evening we saw that it wasn't the products that we've ordered but a completely different product. The following morning I called Louis and explained the situation. I also sent him an email to express my disappointment in their service. He said he'll discuss it with management. Because the contractors were charging us for being on site everyday I had to go to Chamberlains and buy a similar product to the one we've ordered so they can complete the job. After giving them numerous opportunities to remedy this situation they were not willing, which left me with no option but to lodge a formal complaint at The Consumer Goods & Services Ombud.