Paytm cannot cancel a transaction once it has been successfully processed by your mobile operator. In case you have accidentally recharged the same number twice, you will receive the benefits for both recharges. However, this can vary depending on the operator's specific terms and the type of recharge pack.

In case you have recharged the same number twice, but have received benefits for only one of the recharges, please contact your operator directly with the following details:

1. Operator Reference Number (ORN)
2. Paytm Order ID
3. Mobile Number

To find the above details, visit the 'Orders & Bookings' section on your Paytm App and select the mobile recharge order.