Excitel — Refund policy

As per rule of refund policy
I have to submit my Excitel ONU Device and refund process initiated but last 12 days before suddenly company change refund policy and say refund will get after 90 days. And company does not informed me regarding this policy this is so good during refund of ONU Device refund policy for me is refunded within 30 days so please take action against this policy without inform me and refund my security deposit as per 30 days refund policy because I have to submit my device during this policy