VSVS 2020- ISSUE OF FORM - 5 REPLY SENT FROM AO as Interest is due which is wrong

Sir, I have availed Vivad se vishwas scheme 2020 and received Form 5 from CIT in December, 2020 for AY 2017 18.But as per CPC Bangaloore records Interest and also interest on interest is showing due till date for AY 2017 18.I replied above details to CPC and sent copy of Form-5.They told that they are awaiting for reply from AO concerned.Now reply is sent from AO on 21/10/2021 to CPC as demand of outstanding interest is correct and collectible for AY 2017 18.This is wrong reply from AO side.Now what to do? Veresh