HDFC Bank — hdfc bank is not responding to fraud transaction done via cc at london

Address: Gautam Buddh Nagar, Uttar Pradesh, 201301

Website: HDFC bank

My self gazal singla [ hdfc bank customer].
On 5th july at 2 a. M fraud transaction of rs 16, 409 done at london using my credit card. My credit card is with me and i haven't shared any information with anyone.
I informed to bank regarding this at 2:30 am and hot-listed my card.
I just got system generated email that bank with contact me in 7 days. It's more than 10 days there is no response from bank.
Complaint no;- hbl=[protected] and 'hbl=[protected]'
Email reference no :- [protected]

I spoke to their customer care. Every time they assure me that bank will connect me 2 days. But no one has respond yet.

Now bank has just send me a bill of amount "18547" including the fraud transaction.
When i have not done that and i informed in less than 24 hours. It's a credit card payment. Why bank has cleared the payment and now they are forcing me to pay the bill.

Please help me.

Thanks
Gazal singla