1095A and Premium Tax Credit

I have a healthcare plan purchased through the Marketplace, but we have never received any subsidy or assistance.  Up until this year, Column B on our 1095A has always been blank (0.00) as well as Column C.  Column A contains our premiums paid for the year.  THIS year, I see amounts in Column B - greater than what we're paying for our plan.  As I fill in the information in TurboTax, entries in Column B start racking up a HUGE refund.  I have checked Form 8962 and it looks like we are getting a very large Premium Tax Credit - although our income is 401% of the poverty line for our state so this doesn't technically apply to us.  This doesn't seem right - we've never received such a huge tax credit for anything, and with our income I don't think we should be eligible.   If I leave off the 1095A entries and put the premiums on my Schedule C as SE Health Insurance, I end up owing around $2000.  If I make the 1095A entries, it calculates a $10,000 refund.  Something is not adding up for me, not quite sure what to do.