After you file

I called the SSA and they couldnt do anything. they couldnt even see if my birthdate didn't match she just said something doesn't match and she can't see what but turbo tax says its my birthdate. when I tried to check my stimulus check it said the same thing. so the SSA can't even tell me what doesn't match. Ive filed taxes for years I don't understand how all of a sudden my birthdate with SSA and IRS doesn't match, and the representative said its not a sign of identity theft.... so how does this even happen?