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Tried making small talk about stupidity being young, then ask to open an account right then and there?
I highly doubt you were blacklisted for $28. I've had cards write off $2 charges that I make to keep cards active...
Give it past sixty days, then try again. That'll give their systems time to update, then you'll really know if you're blacklisted, if you want to burn another HP.
Ill give you my Macys account!