Amazon India — my number has been blocked by customer call

Address:

Mumbai City, Maharashtra, 400093

My number has been block by amazon customer care, kindly unblock it because i m not getting an update regarding one product for the refund.
I had order 3 clutch of adisa brand but they didn’t delivered timely so i had cancel the order but i haven’t received my refund. Order was place on 31st and now it’s 6nov, hence no update on amazon order list also after 4 nov. If my number is block than on which email i should send mails because they have’t mention anywhere to their email address.