Scammers have also posted here: https://www.yelp.com/biz/swiss-international-air-lines-los-angeles-2
Seems you have a 50/50 chance to have an AI pick up the phone or a human scammer. If you tell the Ai you want a human it will push you over to a real operator.
Call back number: (302) 487-8840
The call back number is used in the BBB scam report: Scams Details.
The number has also been posted to TSU before back in March: Reservation chodes scam
Seems these scammers have a good bit of numbers and will do a short burst of spam calls if you hang up on the call with them.