[SparX]

First and foremost my employers last year did my tax forms wrong and never took enough out of our paychecks so my husband and I owe somewhere around 3k.
Yesterday we got a letter from the IRS (sent to him) that if we don't pay $1,648.75 by AUGUST 25 (because 12 days is enough time to get 1.5k up) they have intent to seize (ours, his?) property or rights to property (including state tax refunds).
What do I even do?
How do I even adult?
How did they manage to screw up so badly and why won't anyone tell me how to fix this?
The last person who helped us do our taxes told us to send it in without a payment in the first place, which I wanted to do but they said it would come out worse for me in the long run but now I am not so sure.

Also the day before that I got a summons for Jury Duty.
I can't sit for that long, and my BC pills have made me have to go bathroom at least one every hour and a half min.
Not to mention with the IRS down my neck I can't really take a week off work to get payed $10 a day when I make more then that in an hour.
How do I even reply? What do I even do?
HOW DO I ADULT.

Thank you ahead of time for your thoughts >.>
I'm kinda frazzled mentally atm.