Center Point Energy is in CYA mode. They are about to be rightfully taken to the cleaners.
If the leak is inside the house it is not the gas utility's fault. It could be at the furnace, water heater, any joint in the line or even just a rust point if it is iron pipe. The gas company's inpection stops at the meter.
Since my meter is in my garage they have to inspect it and check it for leaks once every three years. One time they found a leak and I had to pay for a plumber to repair a bad joint because it was on the house side of the meter.