If the account being reviewed for loan modification due to hardship ollection department still call you daily about past due amount?

If the account being reviewed for loan modification due to hardship ollection department still call you daily about past due amount?
It is possible that your loan has already been sold to a third-party collection agency which may be attempting to collect the debt on its own - and actually have no knowledge of the loan modification you are attempting to work out with the lender. Notify the lender and perhaps they can recall your account from collections and end the harassment.