SE is a type of company who does not fix much of billing or character issue, i know when i play wow for 2month and quit the next month i forgot to cancel my account. I call them and they send back my money in full without issue but SE would never do such a thing. The only thing that they help me with that took me few hours to fix was i put my FF13 item in the beta account and not mine and that was it.

I would just pay the 3$ and get the other account and cancel the other one and next time just make sure you put the right account.