PAYTM ONLINE RECHARGE NOT REVERSING THE FAILED RECHARGE AMOUNT

I am a registered account holder to the online recharge website PAYTM.COM.I was trying to add 1000 rs to my paytm cash through my HDFC credit card on 08 april at 11:07 am , but it failed to recharge my paytm cash while amount has been deducted from my HDFC credit card.
Again I tried to addup rs.1000 to my account on same day 8th april 11:15am through same credit card and its successful.
I wrote my complaint to the customer care support email address [You must be registered and logged in to see this link.] and they replied that your amount is reversed to the account.But it didnt happen even after 5 days.There is no phone number availble in the support contact details of that PAYTM website.
Can anyone suggest me the ways to stop such spam activities

Thanks