Airtel — phonepe account setup

Dear whoever is reading,
I'm satyam raj,
I've bought this sim card on 24th of september,
Today i tried to create my phonepe account using the no. [protected]
But it shows i've already created which isn't,
Then i logged in by using forgot password as i thought maybe someone else has created using my mobile but it shows the same name shahid khan who abused me and tried harrasing me before saying it's his no.
Now what should i do??
Can i delete his details and use it as my own or should i throw this sim card as theirs no option to delete account of the person before who was using this no.
Theirs his debit or credit,
I don't know which card but their is some card saved,
I have screenshots!
What i do now because if i'll use this after editing the details,
The person will again call and try harass me as he'd done before!