No, I don't think you can safely ignore future requests. Often lenders or debt collectors leave things for years in the hope that your financial situation will improve and then contact you again, for example after 11 years & 11 months have passed since the accrual of action.(posted 7577 days ago)Has this alleged debt been properly assigned to the debt collector ? If not, I would cut them out of the equation altogether and deal directly with the lender.
Mark.