HDFC Bank — With one one time password 12 times transaction happens

Address:	Hyderabad, Andhra Pradesh, 500032
Website:	www.hdfcbank.com

Hi, I am Avijit Das.I have ordered a Philips trimmer from amazon e-commerce on 29th January, 2016 which is 890 rupees.For transaction successful i got one OTP and i made the transaction then i slept in night.When i wake up in the morning i saw i got 12 message that 12 time with 890 rupees deducted from my account.Then i call HDFC customer care and blocked my net-banking also.On 30th January i have submitted one cardholder dispute form in my HDFC branch .Then i contact with amazon customer care they confirmed me that they didn't get any money from HDFC, so money is in HDFC bank only and i have that proof also.Accordingly bank's policy it should credit in my account in 2- business days.But it's around 20 days after also i didn't get my Rs.10740 money back.How it's possible that with one OTP 12 times transaction happen for the same amount.I want my money back and want extra money also for this inconvenience.Hope i will get solution as early as possible.