He is going to be angry.

In a chapter 13, the bk trustee will move to dismiss your case and/or object to the confirmation of your chapter 13 plan until those taxes are filed.

No.

Probably yes, it really is legitimate.

I had a client who received the following piece of scrap paper cut into a 2″x 2″ square and taped to his front door:

He took a picture of it and texted it to my office.

It had the standard language:

My name is Marc and I’m a Salt Lake County Deputy Constable.