Home Credit India Finance — Against my personal loan

Dear Home Credit,
I had a personal loan of Rs 2lakh as contract no [protected] for 24 emis repayment tenure.
I have already paid my all 24 emis.
I had opted moratorium service in the period of lock down for 5 months but I have already paid those emis. Home Credit is demanding extra interest for the same moratorium period & I am ready to pay their interest amount but I got know that they have increased our loan tenure for next 7 months.
They never consult me regarding this and I am not in favour tenure extension, I request to you that I want to know the right interest amount for the moratorium period and want to pay in a single payment and close this account as soon as possible.
I am trying to solve this issue for a long through customer care and others but I didn't get any solution.
Please provide me your assistance and solve my problem.
Thanks