Mavis Discount Tire

I called said it would be about 176.00 $ I went got it done the salesman said 400.00$ I said you're estimate said that was the price under 200.00 & Then he dropped it 10.00 $ Instantly I knew he ripped me off said I checked your front end too 0 $ on invoice he changed me 50$ per tire the high price at and shop charges 25 $ balanced and installed he made up price I sent Appointment then called 16.50 $ plus sensors about 175.00 no more I am furious I did not want to argue with him so I am filing a complaint for 100$ overcharge