After filling form 8962, Tax return says I owe more than $14000 all the premium back. I am out of job now a days. What I can do?

I missed the health care portion on my tax. IRS sent me letter to send form 8962 and form 1095-a. When I recalculated by putting form 1095-a. It says I owe IRS all the premium subsidy back. Which is more than $14000. I am out of job and can not pay this money what should I do? Thanks.