Mobikwik — Fraud done by company and still giving threats

I downloaded this mobikwik app in 2021 nov. I recharged for a friend of 199 rs and I paid of more than 750 rs for this and when i tried to close this zip service on 7 may 2022 since a transaction of 2999 was done and i did not even recieved a msg also it was not done by me.
I am totally fed up of this service as whenever i try to close this service i recieve new charges also there is no cosutumer care contact no. Only the recovery team call and They just give threat and abusive language.
Kindly help me out