How to remove payment information for free trial subscription

How to remove payment information for free trial subscription

Hi,

I have integrated the Zoho subscription in our website. I want to remove payment information for free trial subscription.

Url :- http://livingfaith.tranzmedia.in/subscribe/free.

Please give me the solution for the same,  and also share it is possible to integrate  SMS in zoho subscription.Iam waiting for your reply.