After you file

I agree 100%. They shorted me $600 as I did the free version on Turbo Tax and the IRS approved almost immediately. They after a couple months I get a deposit of $600 less?? I was told that neither stimulus payment would affect that sum and now there telling me they can deduct one of the stimulus payments if I received both. This is wrong and very corrupt to do this. I want answers and I want my money. I owe no one anything.