Sheryl has said that she knows (knew? unless she is a medium) several people for whom the service was provided. She does not mention any problems with the provided service, and her tone towards the company is positive.
Do you have a reason for casting doubts on the company? Or is that how you normally feel towards life?
If you have a real reason, please state it. If not, then stop displaying your inner vitriol and let people avail of a service that can be very useful.