Flew allegiant home from Orlando. We missed that t...

Flew allegiant home from Orlando. We missed that the flight left from Orlando Sanford airport.. Went to primary airport first and had to pay 100 for cab to Sanford. I called the airport forty minutes before my flight and told them we'd be there about fifteen minutes before flight time. Mistakenly thought that person would call the gate. Nope... . Got to airport twenty minutes early.. Asked the allegiant baggage counter employee at the curb to let the gate know.... We got to the gate at fourteen minutes before flight time. Employee there told us she shut the door at 345 and can't open it again. The clock behind her said 346. Omg! Three chances for customers service. Three fails. Then the supervisor casually strolled to the gate while our plane sat... Same story... Didn't try to call the captain. Nothing. 0 for 4 on customer service. Supervisor then left and we lost him. We had to get ourselves to the ticket counter and waited fifteen minutes for supervisor to shown up. He gave us the "I called my manager" story and offered to get us on the next flight.... Four days later.... This is ridiculous.... It's now 90 minutes later and I'm still at the airport waiting for the 'supervisor' so I can contact a professional airline and get home.. I'm usually a fan of the low cost airlines, but not when the employees treat customers like this. No way I'd recommend this airline or airport.