Shoot an email to official SE and explain your situation, particularly target the service center in question regarding about their "assumptions" in respect to your phone and tell them they didn't bother to inspect your set carefully to determine the cause of the problem... you as a user of an SE product should not have to suffer for their complacency. (just dont tell them you split the set open because that is an excuse for them to say you voided your warranty on purpose regardless whether you did it before or after the incident)