How do I correct and mark "No, I didn't receive Form 1095-A" ? I went to revisit and checked "No, I didn't receive Form 1095-A" but it is not changing it from "Yes, .....

You'll have to delete the 1095-A and related forms. To delete the forms: 

•  If you're using TurboTax Online software and need to delete a form, click here.
• If you're using TurboTax CD\Download software and need to delete a form, click here. 

If you didn't receive form 1095-A, you probably received form 1095-B or 1095-C. Form 1095-B and Form 1095-C don't have to be entered in TurboTax. They are only for your information.

If you paid for health insurance out of pocket, you may be able to deduct them on your income tax return.

• See What doesn’t count as health insurance on my 2020 return?