Refund rather lack there of!

Robbie Williams Tickets bought for 18 January 2025, concert moved from Calabash to Time Square, was advised a refund will take 10 working days, this was on 9 October 2024, we are now 24 working days later, still no refund. Unacceptable, cannot find an email address to enquire, tried though Ticketmaster, no luck. I am very unhappy with how this has been dealt with.