Upvote:3
IRCTC supports a wide variety of payment options like
You can choose your preferred method on the booking screen, like this
Possibly, you are using the first option "Multiple Payment Services", which has the PayTM option which is causing you problems.
Simply chose a different payment method from left side menu. For example, using a debit card with PIN gives
In case of problems, you can contact IRCTC by e-mail.