Worst Experience ever

By far THE WORST experience I've had in my life. I purchased a rave burger, and was not satisfied with the product. I did not even eat any of it. I then returned it to the store and asked to be refunded instead. The manager became extremely aggressive and told me that nobody invited me to come buy from the store, it was my own choice, I should take my burger and leave as she will not refund me. The griller then joined in and started shouting at me from behind the cutter that I'm mad if I think I I'll be getting my money back, and that I should leave the shop. They then in a joint attempt started laughing at me and made me out to be some kind of ******** fool. I asked to speak to the store owner as this is a franchise, and was given a number that does not work. This is the first time ever, that I was told that it is company policy NOT to refund someone their money back, if they are unhappy with the product or service