Vodafone India — balance deduction

Address:

New Delhi, Delhi

Hello sir,
I did a recharge of 300 on 1st may on [protected].. Today a call went to a number 5171739, without my knowledge. Phone was kept idle.. They must have send flash msg, dat press 1 to call and 1 would have been pressed.. They did cut rs 252 for 17 min call.. I have been using this phone for 5 years, never had much balance, so this type of call never happened.. Today when i had balance, a sudden call happened. I did call the customer care, the guy was rude and did not even tell, what was the call rate.. Please look into it.
Thanks
Prashant