This might be the same person who scheduled a meeting with me last week. They called themselves Christian Jong with the email mjong0809@gmail.com. Cold booking without a prior message was odd, so I hopped on to ask him how he found me. He said Contra and then immediately asked to see my LinkedIn to make sure I was from the US. I asked why, and he said he worked for an engineering company in Singapore looking to find workers in the US. Nothing he said made sense, so I told him no and hung up. If you have a public booking link and get a random booking from someone you never spoke with, cancel it.