Dream Cars Austin Ruin my credit Cedar park Internet

 Bought a vehicle from them 2 years ago. I went back to them because the vehicle got total. I explained to them the situation and that I just wanted to see a vehicle that I saw on line. To make this short they told me to have a seat and then ask me if all my information from previous purchase of the vehicle was still the same. I told them yes and also that I was here only to take a look at the vehicle nothing else because i had to wait until the vehicle got settle and paid off the current loan before i can go forward. They told me no problem. Come to find out that they ran my credit with out asking and i had no knowledge of them doing this. The reason I found out is because im register true a credit check agency and got an email from them. They did 5 hard credit inquiries check on me and my credit score got ruin. From 680 to mid 500.