Terrible service

I asked total price to fit new tyres on my car and was told a certain price later when had to pay the price is different I tell them that's not the price I was told they must remove their tyres they then tell me I must pay R700 cause their employee made the mistake of not making me pay first otherwise I want get my car back had to borrow the extra money to pay the supervisor also rude and ****** I had to take the fall for the blunder they made