Cant change exchange signature

We had an exchange signature set up through Code2 for our customer service distribution group.
We had to make signature changes and decided to have them create a custom signature through outlook.  After doing this, when they sent an email from  the customer service email who is a member of the customer service group from their outlook they got two signatures.  One was their new outlook signature and one was there old customer service signature.  I Deleted the customer service signature out of code 2 to bypass it all together and I cleared the custom attribute fields and phone, fax, website, in the exchange properties of the customer service email.  Some portions of the signature are still showing.  I cleared the website but it is still showing.  The name of the email is customer service and that will not clear.  How can I make it that when the clients send from the customer service email account in there outlook; they only send there outlook created signature and not anything being pushed from the server.

Thanks