your questions about the police action suggest that you may have a habit of not accepting or understanding facts presented to you.
there was a reason for the police action, yet you question how they can act without there being a reason. it's obvious to the reader, but seems not to be to you.
taking that as an example, perhaps there is more of a back story than you can admit to yourself.
it is highly unlikely that they have cut you off for no reason at all. but sadly, that is academic now. as they have explicitly forbidden any contact, at risk of being arrested, there is nothing you could do to rescue the situation anyway, even if you did recognise what went wrong.
you must keep away from them. find other interests. maybe seek counselling. read up on internet during lockdown. good luck.