@YMehta_@HDFC_Bank@HDFCBank_Cares@tatadocomo
This was a similar experience with Tata Docomo in 2014. I had a post paid sim with Max bill of ₹1000 cut off.
However, they had billed 14k for using 400mb more on one specific day.
They threatened by calling all recent dialed numbers, few to my colleagues at work.
