No reply for prestige tickets booked.

I booked prestige movie tickets last year but had a medical setback, was given a voucher that was valid for one year expiring mid 2020. During Covid lockdown movie theatres were closed, I emailed them stating that I cannot use the tickets as we are on lockdown. Did not get a reply. Emailed again in September, still no reply. I phoned in November and a lady named Bridgette spoke to me. Asked me to email *** again and cc her direct email. Which I did, still no reply. Now I try to call the number and keep getting sent to voicemail. All I want is my tickets but cannot get a hold of any person.