Business ProfileforECS Tuning, LLC

I ordered an Item from ECS Tuning for a Super Rare BMW Car Part that is not available from BMW anymore, I called in about this item on July 1st, I received info back on how to pay for the item on July 2nd gearing up for the 4th of July weekend. I paid the item and was assuming I would get the item in relatively good time. Today 7/11/24 I called in as they have told me throughout all this week they would give me an update regarding tracking etc that my item was apparently sold to someone else. Then it was my fault because the payment I got charged for on my end has not had enough time to process/clear on their end. The money has left my account and there telling me they cannot fulfill my order. Now they have another one of these items in Stock but there is a price difference of quite a large sum. They told me well in order to fulfill it they will have me pay the difference. Being I'm a loyal customer to them and supported them spending loads of money with them. They told me a refund with take between 3 to 5 days then I would get the money back and have to rebuy the item from them. I don't see to understand why a internal flaw on there end that makes the customer pay. the biggest kicker for me is that they advertised this product etc, and I pay for the item and aside from their internal billing issue they have they sell it to someone else which is false advertising entirely or even more like a bait and switch scam. I want this company to simply understand they messed up and fulfill an item of the same equivalence to me to assist in our relationship. If I have to I am prepared to file a *** Complaint against them, Consumer Protection Law states a business to honor the price at which an item was purchased for and the law also states "unfair or deceptive acts or practices r these laws are designed to protect consumers from misleading business practices" Overall in short terms, I paid for an Item, they sold the item to someone else, refuse to fulfill a new one.