Why can't i delete records from my Outlook database of contacts?

[Christine]

It keeps growing. I do a lot of importing could this have
anything to do with the problem?

I go to my address book, Show Names from the:

I have multiple contact lists that I have deleted but they
still appear as an option.

Our IT people can't figure it out.

 

[Russ Valentine [MVP-Outlook]]

Neither can we. You didn't even post your Outlook version, let alone what "I
do a lot of importing" means.
Provide clear and accurate details if you want help. Include the contents of
your Folder List. Remember, we cannot read minds.