TRIP.COM — Refund not Received for Flight Tickets Cancellation

The following flights have been cancelled by the airlines and I have requested refund from the vendor, i.e. trip.com more than a month back.
(1) Order No. [protected] Kolkata to Bengaluru – SG 658
(2) Order No. [protected] Kolkata - Bengaluru - I5 588

I am yet to receive the refund as of today. On contacting the vendor, I always receive mail to wait for few more days. Currently, I've been asked to wait for 60 days (initially it was 14 days waiting time).