Mobikwik — Breaching privacy and contacting relatives and abusing them

I missed my Emi and mobikwik starts calling me alot of time in a day with different numbers then they start harassing me and after that the Agents named Arohi Jain and her mates keeps calling my friends and relatives and harassing them, i didn't share my contact list, still they have my whole contacts. I even paid half of the amount early but still they are calling my relatives and abusing them.
Sharing their no.
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