RESULT: The parent company Frias resolved my issue. They took the time to research and find the cab and driver using our credit card information. They did a full investigation and although I don't know if the driver got reprimanded, they were very diligent in the follow up process. I guess I would take an Ace Cab again, but next time I'll double check to be sure I don't leave anything behind.
EDITED: Below is my initial post. One day after posting I was contacted by the parent company and they are looking into the situation. I appreciate their effort and I will let everyone know if anything comes of it.
ORIGINAL POST: Driver was rude and a thief!!! We left our ipad in the car and so I left a message on their lost and found number and never got a response. However, we got a call today from a guy who bought the ipad from the taxi driver. Sounds like a scam, but no matter how it went down the driver did NOT turn in the ipad and the company never got back to me. I understand Ace is one of many cab companies ran by one parent company. I would (& will) avoid them all if this is how they conduct business. At least follow up. I realize it's difficult to monitor all the drivers, but at least pretend to care.