Home Credit India Finance — Interests of moratorium Period

I took a loan in Feb of 70k with flat Interest rate of 22.28% p.a. from Home Credit for the period of 24 months in March of 2020.

I paid 1st installment of Rs 4216 in April then i lost my job and i took moratorium for 3 months for (May, June, July)

then i started paying my installments again till my 24 installments are paid.

now they are saying there is Around 15k interest of moratorium Period is remaining you have to pay it.

and when i ask them how this interest is calculated please provide me complete details and calculation in document i will pay it. but they are not providing me complete details regarding this.

Now they started torturing my parents by calling them again again continuously for payment but they are not providing me details.

so what should i do now ??

please Help me regarding this.