Not really sure why you had interaction with the security guard staff, but most of them are contracted out by Amazon. And based off of why you were at the facility, may have dictated the response from her. For instance if you were trying to gain entry and are not employed there, were fired and escorted out, inquiring about a job (which is not done directly at any Amazon unless they are holding a hiring event and even then person's should go to their jobs website). Perhaps you should consider the context.
She doesn't work for Amazon. It's a separate company that they hire.
Thanks! Your answer is awaiting moderation.