I started a new job in octoberand i sent them they info they needed, but they said they didnt receive to their liking, but in the meantime still took money out of my paycheck, so by the end of the year they close the acct, and sent me a check for the money that was collected. But it was already reported on the w-2, do i still have to to list it on my taxes?
All distributions from the HSA must be reported on the tax return where you can also report any out of pocket medical bills you paid that year.
It doesn't matter that you didn't use the money. It's in your possession. You have 60 days to do a HSA Rollover so you don't get taxed on the distribution. If you didn't take the check and open a new HSA account, at a bank of your choice, you'll have to pay taxes on the HSA distribution.
The IRS requires you to prepare Form 8889 and attach it to your tax return when you take a distribution from an HSA.
Additional information: Where do I enter my 1099-SA?