<prompt> Human: I got a letter to my address, same unit number and everything, but to a different recipient I googled what was clearly a company name, and it is an investment company. When I searched the return address, it came up as from a collection agency.The collections are for an electric bill, addressed to who I assume were the previous owners of the condo it was flipped before we bought it, but it was a different investment company on the paperwork. Not sure if these were the PREVIOUS previous owners, or associated in some way. Normally I would write this off as not my problem, but the letter says the last payment was 10112017, and we started living therepaying all associated bills as of 7117, so perhaps it is intended for me? I looked up my payment history for the electric company, and there wasnt even a bill in October 2017 the bills are quarterly so Im really not sure whats going on. Is my course of action to just return the letter taped back up, oops with No Longer At This Address sharpied across the envelope? Do I request debt validation to prove it isnt for me? Location: Washington State. Thank you!  <response>: Nope. Its not addressed to you. Label Return to Sender and pop it in the mailbox 