MRP Are dishonest ********

I ordered 4 items online on 27 August. ALL ITEMS showed how many were still available. I had a problem paying with my card, I wasn’t getting my pin to verify it. I decided to drive to a branch to pay and make sure I got the items. Money accepted but on the 29th I received an email that my order had been cancelled. I had to phone in and ask why and was told ALL 4 Items were out of stock. All 4 after ALL 4 showed available!!!! I paid cash and a month later MRP a home still hasn’t refunded me!!!! Why??? What you doing is dishonest and *****, taking my money without having the item. I WANT MY MONEY BACK!!!!!!