I cancelled my ticket but did not get 100 refund

Train
I cancelled my ticket but did not get 100% refund.

Upon cancellation of the ticket, the refund will be made for the ticket amount only. If any promo codes are applied in the ticket booking. The amount which will be refunded will be the ticket price at the time of booking minus the promo applied. The Paytm Service Charges and Payment Gateway Charges are not covered under FREE Cancellation and will not be refunded.