Not enough info though typically if a document has errors the document is corrected, for example a name misspelled. You actually sign a document stating that you will cooperate in document corrections. Without knowing what is the main issue hard to say though it would be extremely rare for a lender to recall a loan after close.
Not enough information to really give an opinion but my best guess is if they threaten that seriously, consult a real estate attorney.
That isn't typically how it works. Once a loan is closed, it is closed. Period. They can't come back at you 6 weeks later. Now at closing, you do agree to sign or resign any missing documents on the loan, but that is very different that 'redoing' the entire loan. If they made mistakes and closed a loan they shouldn't have, that is NOT your problem, and they would simply have to deal with it internally. I'd tell them to go away, and if they keep insisting, contact a Real Estate Attorney. Good Luck.
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