Wish complaint: You are not above the consumer rights act!

I ordered 3 automatic soap dispensers From wish. 1 white colour, 1 khaki colour and 1 burkeywood colour. The 1st one turned up after multiple changes to the delivery date. By look it was correct It was the white one so I presumed this one had come first… but then I tried it and it didn’t work despite following the very limited instructions. I complained and received £19.40 refund as opposed to £23 (which included my delivery). Then the 2nd one turned up 2 weeks later (again the delivery times repeatedly changed). When I received this parcel opened it, it was not even the right product. This one was a different soap dispenser. Again… I complained. Again I received £19.40 refund as opposed to £23 (which includes the delivery). Then, the third one turned up and was white! As I had already had the white one (be it faulty) this was not correctly fulfilling my order. I complained and I have been advised that the order was correctly fulfilled but it has not been as I have already had a white one of these (despite faulty). They will not address my issue and I keep getting robot like automated messages in response to my contact to them.