Is there a way to protect only the formatting of a cell, while allowing a
user to change the content?

I've created a spreadsheet for users with 3 columns formatted to Text to
accept long account numbers, but the users are somehow changing the formats
back to Number and scientific notation is being applied to the account
numbers.

I'm getting tired of fixing individual spreadsheets, so I'd like to lock
down the formatting. Is there any way to do that?

Thanks in advance for any help that can be offered.