Video Call Apointment Issue

Hello, I have created a US account, but somehow UK account was also enabled or created which I was unaware of. Now Amazon is asking to verify the UK account by a video call, so regarding that I have received an email to book a time for a video call for UK account verification. I did fill the form with possible three dates and all the dates have gone, but I did not receive any email to confirm the time and a link for a call.

Is there anyone here can please guide me what I need to do next to get arranged a video call for account verification?

Best Regards