This should like bad company processes all around. For a sum this high, you need more than just a video call. Get an email (if the tech team setup DMARC correctly, sending phishing from company-domain is near impossible). Talk through company chat (Slack, Teams, etc). Call a couple high ranking on their cell.
It's one of the better ways to avoid getting scammed: Try to validate the communication in ways without relying on any information they gave you.
If someone claims to be a police officer and hands you a number to call to see if they are real... don't use that number. Figure out the non-emergency number of the station they claim to be coming from independently and ask them. If a "new agent" from your bank calls you and gives you a "new number" to call them, figure out an official number of your bank and call that.
Yep. Previous scam victim here. This step would have halted the scam I fell for.
Also, whenever paying new accounts, once you've independently reached the person you think you're talking to, always do a test transaction and make sure they get it before sending the rest.
If they want to do business like in the 21st century they can invest in 21st century security and polices. Otherwise get on the darn plane and do it 1970s style
