I will never purchase another vehicle from this de...

I will never purchase another vehicle from this dealer. I purchased a vehicle in June 2017.
1. I was promised a spare key, after 6 months of running around through other dealers, I still have not received the key. 2. They took a longer than usual time to have the car registered . 3. I purchased an extended warranty and they stated that I could cancel at anytime without any hassle. I am now trying to cancel the warranty and they are telling me that I have to come back in and sign paperwork to proceed and Edgar Pinto will not return my calls/e-mails. BE WARNED!