Alamo Making mistakes on purpose and make it hard for people to get their money back Tampa, Florida

Alamo (Tampa Airport) seems to bank on customers that forget or do not bother trying to get their money back. I rented a car from Alamo throught a third party and received a prepaid voucher (I paid already). After returning the car, they
charged me for the full amount. I complained, and after a few emails going back and forth, they returned part of the money. I complained again, and after many additional emails, they finally budged and returned the last part.

The second time I rented from Alamo, they charged the full amount that was pre-agreed. And then they charged for extra days, although it was agreed they were included in the full price. Of course I complained again, and they then tried to make it so hard for me by not answering my questions but sending me a new (higher) bill.

It is just a bunch of crooks. It seems they are making mistakes on purpose, hoping that people wont complain. And I must admit, their stubborn customer service makes it very tempting to just give up and give them these extra dollars. I am sure many people give up, and walk away in frustration. Mission accomplished for Alamo, because they then keep the money.