****py service from Rude arrogant owner

Excellent service until you sign the contract and they take your money. 3 months later after following up with their sales lady numerous times, I have had no response or feedback. Today I lay a complaint on their own group, I get blocked and get threatening calls from the owner. The owner is rude, arrogant and has an extremely bad attitude, she even went as far as telling me to go run in traffic. I told her to just give my initial fee back and we will part ways, to which her response was i must take them to court! She argues that they quoted me on installing a new system which I didn't need because I have a brand new un-installed system that they say is apparently not working, how do they know that? She blames me for not following up with them, of which I did follow up with their sales person, but since when is it the clients responsibility to follow up with a company you expect service from?! Wish I had read the reviews here before signing anything with them.