Ticketmaster complaint: No response to multiple refund requests

In 2019, I purchased tickets to an event taking place the following year in October 2020. When covid hit and everything started getting canceled, the even was rescheduled for a year later in October 2021. A few months before the event, Ticketmaster released a notice that you had to be vaccinated in order to attend the venue. Otherwise, you could ask for a refund from the contact us section in your event history. I followed the proper steps way before the event and never heard back from Ticketmaster. I tried calling, but same as every other company, they had too much call volume and go to our site instead for help and hung up the line. No opportunity to even speak to a live person. I’ve now sent 5 follow ups to ticketmaster for the last 2 months and still have not heard back. My tickets were never used. Ticketmaster should honor the refund, but at minimum respond to my messages!