"Ashikarazu"?

[nobap]

悪しからず

あしからず

"/don't take me wrong, but ../I'm sorry/"

How would you use this adverb? What kind of nuance does this word have? Can anyone give me a sample sentence?

Thank you!

[jbraswell]

Pretty formal.

サービウ品につき返品はお受けできません。悪しからずご了承お願いします。
We regret that we cannot accept returns on specials.