Dishonest rental office - worst ever rental car experience

I made the mistake of trusting Thrifty's branch and pre-paid for a rental car for a week at Madeira airport in March 2017. On arrival I was given a terrible car called a Lancia Ypsilon having paid for a Peugeot 108. The agent tried to describe it as an upgrade which I declined to pay for. They showed me the Ypsilon saying it was all they had. There was damage to one tyre which they said was all recorded indicating the condition report. The car was terrible - with a shuddering on braking from the front offside wheel and a slpiping clutch which made hill starts unsafe. I stopped using it and used busses and taxis. I didn't want to spend a day of my holiday changing the car so just returned it to the airport on flying out. They then examined the car and claimed the damaged tyre was new and denied it was pre-existing. I disputed this pointing out they had recorded it - they refused to give me the original condition report. The agent smirked and said they had my credit card details and anyway I should claim on my insurance. They have now taken €190 from my account for one small cut in a tyre which was pre-existing. Quite a good money generator and I dare say they have given the car and same tyre to another victim this week. Shocking dishonesty.