PaySense — Abusing and calling contacts

Paysense is worst app i took loan in 2018 and i paid of f1 loan second loan i paid certain emi in 2019 till march 2020 later due to lockdown i was jobless i tried reaching paysense customer care but could not as there was no contact details available in the app.
Now after three years they have accumulated huge interest and asking me to pay calling using abusive language and calling all my contacts and spoiling my reputation.
I cant pay a single rupee to them for their worst act.
Please look into this.
Thanks