2013 Chevrolet Equinox fuel system problems

When I take off and begin to accelerate, car hesitates. Getting worse. As I was approaching the top of an overpass, had to speed up because it seemed to hesitated. Took it in once, service manager and assistant both said they drove it and nothing happened. I left there and it happened and continues to happen.

6 months after purchase car began stalling. Vehicle always was low on oil, even with proper maintenance. Loss of acceleration speed and stalling became usual. Finally after filling the tank it stalled and would not start so we had it towed. Timing chain was the reason given so $3600 later I figured it was fixed. Not the case. Oil was still having to be added and 1.5 years later while driving, the motor has blown. We still owe 9k on a car that is inoperable and also usaa requires us to keep our insurance. I