Alamo Rent A Car

I am exasperated about the experience I had at this Alamo yesterday/​today. While Shelly, an amazing employee, was fantastic, the rest of the experience was tiresome and ended up not working out because of how difficult this company made it to rent a car!!!
I was planning on renting a large SUV to transport my minimal belongings cross country. Wanted to make a road trip out of it so the reservation amount was pretty pricey. I thought a bit too pricey, but without even expressing that, Shelly noticed and was able to reduce the price by almost half the amount. Obviously, she needed approval from her higher up, so Tom, though he seemed resistant at first, also approved it. Great!
OR NOT. This company requires a major credit card with the full amount of the reservation available for a hold. So while I had the money to pay for the car, I was not able to get it because my credit card has a lower limit. My credit is good, I’m just a young artist, who doesn’t have a huge credit card bank at her disposal. Since when must I have such huge amounts of borrowed money to rent a car to escape a city where I can hopefully save a huge amount of money?! My travel buddy and I, along with the staff tried to do some trouble shooting. As we struggled to find a solution Tom, the manager, became increasingly condescending and argumentative, pushing my companion to look into solutions that she was clearly not comfortable with. We ended up leaving with out a car that night, with the plan to return in the morning with a wealthy friend who had my back. But that didn’t work either, he doesn’t drive. Fair enough. I get that.
All in all, I wasted a lot of time at this Alamo rent a car, because of some ludicrous policies that may or may not be specific to this location. By the way, called Budget Car Rental in a desperate tizzy, I was able to book a similar car, right away, at the same rate as the reduced price, Tom at Alamo seemed so hesitant to give us. I can pay up front, with real money, that is mine, and only 100 $ needs to be held on my card until I return the car. Tom was insistent that EVERY comparable rental company had the same policy, needing to have a credit availability of thousands of dollars. Wish he hadn’t been such a know it all or I would have checked that facts earlier. OY! VEY!