Power Steering Pump problems of the 2011 Chevrolet Malibu

My mother"s 2011 chevy Malibu ltz has had a recurring problem concerning dash lights. It is quite common for us to be driving down the road and all of a sudden, there are no lights within the gauge panel or stereo face panel. Sometimes the lights will only dim, others they go out completely. On other occasions the lights don't come on at start-up and may turn on at some point, 10-15 minutes down the road. We've called the dealer the car was purchased from, starling Chevrolet-Cadillac to report these issues, only be told to bring the vehicle in "when it was happening", by the time we would get half way there, the problem stopped and the service writer says come back when it's happening. We've wondered if this could be related to the electrical issues for which Chevrolet sent out the extension of the warranty to 15 years or 120,000 miles. Another issue we've had relates to the older power steering recall. We've had the car in to starling Chevrolet twice that they have replaced the power steering pump. The problem I have concerns the un professional work of the mechanic who performed the service. While having tires replaced a couple of months after the power steering replacement, we were shown the way the starling Chevrolet mechanic had beat the devil out of the cars' under carriage. It's absolutely unforgivable for a chevy dealer to cause this kind of damage while performing a recall service!!! finally, is the first problem we incurred with starling. During the original test drive, the dealer's salesman proceeded to toss a drive-out tag in the rear of the car during which they damaged the paint. My brother tried to stop the salesman from using this tag hanger when he saw the unguarded magnet hanger, but the dealer rep wouldn't listen. It tooky a month to get the paint fixed and only then after mr. Starling got involved. The dealer changed hangers as a result!.