No, not a check this year.
If your parent's TurboTax program told them they could not claim you, you should have selected "No." to "Someone else can claim me".
Who did you think could claim you if not your parents?
You could now file an amended return, you might get additional refund.
As far as the stimulus payment, the IRS has you as a dependent in their file, so you should not receive a stimulus payment any time soon.
We are told that the payment is an advance of a 2020 tax year credit, so when you file your 2020 tax return, IF you claim yourself, you should get the payment as a refund at that time.
I wish I could give you better news or advice on how to get the payment sooner, but the IRS is not taking phone calls and I don't think there is anything more you can do beside file an amended return.
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