Also, make sure to use official website, not just Google search, or any chat agent question, the SEO are sometimes poisoned with scam phone numbers.

I consider myself always to be wary of scams and my trust-level is zero when they call me, but I recently almost got myself hooked on an airline support call. I google searched the support number and trusted the AI summary on top and called it, they asked me my reservation number and I happily provided. With the reservation number they have public access to the entire reservation details, they knew my name, my flight, my co-passenger details everything. I called to do a reservation for my pet which is normally not done online. their problem, they got greedy and asked me more than pet travel, iirc they said there was a problem with one of my flights, it wasn't paid and I had to repay on the call. If they just followed along instead of going by the script I would have paid the pet travel amount.