False advertising and shocking service from Leroy Merlin

I made an online purchase of a kitchen mixer tap with pull out spray as per their adverti*****t. This was a “Black Friday” purchase and the tap was less than 1/2 the retail price, paid R1099, it is now being advertised for R2213 still as a mixer with a pull out Spray. The tap was delivered within a couple of days but I never opened the box as my new sink and countertops were only going to be installed this week. I opened the box last night and this tap does not have a pull out spray....it is not manufactured with one!! I sent Leroy Merlin an email advising them of the error and requesting that they provide me with a mixer with a pull out spray and if there was any price difference that they bear the costs. Initially they were confused as the replacement tap was cheaper than the one I ordered ie the current retail price and they said they would refund me the difference. I had to explain to them that I had bought the tap for R1099...they then agreed to fit the bill of the extra R670 and send a replacement. Now knowing that it was urgent as my kitchen installers would be doing the work this week they then phoned back and advised that it would take a minimum of TWO weeks for their couriers DSV to deliver the new tap and pick up the falsely advertised tap....knowing full well that I would not accept this. They obviously didn’t want to fork out the additional R670.00!! On asking for a refund I was advised that their courier service would have to pick up the falsely advertised tap and return it to the store before the refund process could be started and that it would then take a further 5 to 10 working days to reflect in my account....putting me back into the same position ie that I can’t even go and source a tap locally as I don’t have the funds in my account!!!