Avoid Alamo/Guerin - Unsafe cars - one of the worst rental car experiences of my life.

I want to start by saying that this was the worse car rental experience of my life. I rented a minivan. It took over 3 hours of waiting in line before I could get the car. And, it was all downhill from there. On the second day, after our day trip, we were headed to Castro Marim. However, right when we were ready to leave, the minivan started showing me a "service required" light. I had to drive all the way to the airport to swap out the car for another minivan. Our trip to Castro Marim was delayed by 2+ hours and we didn't get there until past midnight. But that's not all of it, the 2nd minivan we got was even worse. About an hour into our drive, it started showing me all sorts of warning lights on the dashboard, including, "Brake System Failure", "Stop", and more. The lights in the entire car were flashing every few mins. It was really scary and traumatizing for everyone in the car. We pulled over multiple times and restarted the car (as instructed), which resolved the issue each time. However, when we got to our rental house, the car died right at the gate blocking other cars from getting into the property. We had to drag all of our luggage through a long path in the middle of the night. The next morning I got in touch with customer service, who arranged for a tow truck to pick up the car and a taxi to pick me up and drive me to Faro airport to pick up yet another minivan. This 3rd car had a broken sunroof shade and made our drive very uncomfortable. I chose to pay a premium on a car rental to ensure we would avoid these types of issues. However, that was not the case. I was in Portugal for 5 days with my family and lost about a day and a half because of all these issues with the cars. Again, this was the worse car rental experience of my life. I am considering posting reviews with my experience on the 3rd party sites. Contacted Alamo/Guerin multiple times but they have not gotten back to me.