I received an e-mail this evening regarding a sale on Southwest. I purchased a single ticket and NO I did not press "submit" repeatedly. Southwest has taken out the charge for single my ticket 18 (EIGHTEEN) times in a single evening. I have been trying to reach them all evening. I got a busy signal at first and now the phone has rung, telling me that I will be on hold for one hour and fifteen minutes to one and a half hours. DON'T EVER USE A DEBIT CARD with SOUTHWEST. Perhaps your best bet would be to stay away from this airline entirely.