Allegiant Air Prejudice towards disabled customers Bristol, Tennessee

It's absolutely revolting what they did to my mother she is 62 and disabled. We were there 45 mins before departure like it says for our ticket. There was no one at the boarding pass counter. We waited and waited and still no one showed up we waited for about ten to fifteen minutes. Then someone came by and told us she had been waiting aswell but said they were closed so we went to the security checkpoint and they guy told my mom she had to get her boarding pass, So we went back to the counter and still no one was there. And the plane was schedueled to take off at 2:20 PM and it was now like 2:10 PM well no one showed up until 2:30 PM the plane still had not taken off. So my mother went to get her boarding pass and the guy said he could'nt do anything about it. She didn't catch his name but im sure its on record who was working the counter at that time, But the man was horribly rude. So my mom wanted a refund and he stood there and told her she was out of her 200 dollars she paid for round trip to florida and back. It's so disgusting how they treat their customers,  they pretty much stole 200 dollars from us and were prejudice to my disabled mother. NEVER EVER EVER USE ALLEGIANT AIRLINES. My mom even called their office and they said there was nothing they could do. It would be different if we were late or did something wrong but we completely followed their guidelines and they just treated my mom like dirt and robbed us of 200 dollars its disgusting. We even had to drive 120 miles to get to this place. NEVER USE ALLEGIANT AIR they must be prejudice towards disabled people. BTW my mom walks slow and uses a cane most of the time but I doubt it took her 30 mins to get from point A to B like they were claiming saying she wasn't there on time.