If it makes you feel any better, I encountered a similar situation...could not book on line due to Delta system problems. Got someone on the phone to take the reservation and was charged twice...plus the $20 booking fee. Insult to injury, the ticket was almost $1500 and I paid with a debit card because I don't carry credit cards. I came back from a trip to $275 in overdraft fees that neither my bank nor Delta will reimburse for, not to mention what it took to prove they double debited my account, the numberous canned rude e-mails, and having to follow up twice to get the refund they said they approved.
Never again....
