Oil Change

This shop caused an issue with my car that busted my rear main oil seal. I was told they filed a claim, then when they said insurance company wasn't paying they wouldn't give me a claim # or phone #. So they told me the name of the insurance company, I contacted the insurance company and they stated they have no business insurance through them. Then when I confronted them they yelled at me for calling their insurance company. I gave them 2 business days to file a legitimate claim, I was told he would call me back. He called me back today with some guy named Joe's phone #, it was the guy's uncle and he proceeds to tell me he owns a shop just like this and there's no way they could've caused these issues, I said ok then let the insurance company decide and file the claim. They refuse to work with me and will now not answer my phone calls. The damage they did cost me almost $1000 and it was on vacation when it happened. We had been traveling. This was a huge inconvenience. I have filed a claim through the BBB and I am taking them to small claims court! DO NOT HAVE YOUR CAR SERVICED HERE! They do not have business insurance from what I can tell.