I have taken a Discount Cab about 10 times now.
Always arrive in the time frame they give. They know there way around & have GPS if they don't. They accept credit/debit cards..payable IN the cab.
Which is where my 10th time turns sour. The driver over charged me by $300. And I live paycheck to paycheck..so this was no good for me. Cause it took a week to get my money back.