unreturned charge?

[URCharg]

I stopped the version service and I have returned my equipment.

The ups tracking number  that I have recieved shows package is delivered.

Also I have called the customer services they told me the bill will be clear next month

however I got the letter from EOS CCA (debt collector?) 

verizon customer service did not mention about what was not returned.

never had this kind of situation. I really do not know what to do.

DO I HAVE TO PAY THIS BILL? EVEN I HAVE RETURNED THE EQUIPMENT?

[LawrenceC]

Hi URCharg,

Sorry you are having difficulty. An agent with access to your account will reach out to you directly by email, private message in the Forums and/or the billing telephone number on your Verizon account for more information or to help you resolve your issue.