Deductions & credits

Yes, My son is 18, but the irs is still giving us money for him . Got it in the 1st stimulus and when I called the irs about second stimulus they said the are still giving stimulus to the 18 year olds. Plus I received stimulus for him on the 3rd stimulus.  So the lady at the irs said to claim the whole amount you would have gotten on the second stimulus as a credit on your taxes, but it's not letting me do it. I think it's only fair I get to claim the whole credit I would have gotten if I would have had it deposited in my account when everyone else got there's.  I hope that makes sense. Thank you