well you do know with sony there is 2 ways to deactivate an account. 1 is talk to live chat support and they can do it. B you can go on sony's website and there is a place somewhere on there do it manual.( i forget where i haven't used my ps3 or PSN account in 2 years)
i know because a SOE employee told me. so that means the person who deactivated it did it from talking to SOE live chat. so talk to live chat again but ask them how to manually deactivate it. dont even bring up that you want it deactivated by them or got hacked or whatever, just say i need to know how to deactivate my account on the sony website. but craftily you want it deactivated from the PS4 so they dont think you want to close your account down.
and P.S they didnt side with them. they can not physically deactivate the account from all the PS4's if they already did once in under 6 months. it disables that option for them and only the support managers (higher ups) or whatever can do it, not just the people who sit and talk to you.
so you are mad they are doing their job? lol