Terrible / non existent customer service. Attempted to refund or change a flight in the middle of the pandemic. I gave notice a month in advance. They told me to reach out directly to the airlines (Aeromexico & Delta) - both of which noted that they would be available to change flight or give me a flight credit for a later date, but noted I had to go through the agency to do so (Vayama). Vayama didn't get back to me after 10 attempts to get in touch, and no phone service. Then they would not refund or credit after the airlines confirmed. Had to dispute with my bank but my claim did not go through. Do not trust them.