In October, 2019 I refinanced my mortgage. The new mortgage amount was supposed to be only for the amount of the original mortgage balance that I still owed, but the lender's calculation of this figure was incorrect. After the pay-off on the refinance, the original lender sent a check to me in the amount of $2943 for excess mortage payments. Do I have to treat the $2943 as pulling out money from my refinance and therefore not taking a deduction for the full mortgage interest amount listed on the 1098 from the refinanced lender (who in turn immediately sold it to another institution)?