Turbotax miscalculated my refund and I can't fix it without paying extra. How can I talk to someone to point this out? Thanks!

turbotax wants me to get my 2020 stimulus check, but I was not a resident for tax purposes and did not qualify then. There is no place to indicate this in the system and I can't get to someone without paying extra, but I shouldn't have to because it's their error, not mine. I'd appreciate any help you can give me!