Is it morally right for a ban to be extended if you were offline?

[Apricity]

I did some stuff in general chat that warrented a 2 day ban.
I told myself, 'eh, that's fair, I was kind of a butthead.'
I wait 2 days, try to sign on, and my bantime has escalated to 19 days.
Is this an okay thing to do (extending someone's ban time when the offense was NOT repeated?)?
How could I do anything in the 2 days I was offline, one of those nights which I didn't even have ACCESS to a computer, that would warrant a 19 day ban?
Has this happened to anyone else?
Is this a glitch, or overkill?
Signed,
Apricity

[ringoluver]

PM an admin if you have a concern over a ban.