Gas is not a guessing job. It's a licensed one.
Gas work occupies its own category in plumbing, and everyone involved treats it that way. The utility handles the emergency side, that's their role and their authority, and what comes after is where this service lives, the day the gas company has shut off service over a suspected leak, done their part, and left you with a house that doesn't fully work and a problem that needs licensed hands to resolve. That day has its own particular stress, no hot water, no stove, no heat depending on the season, and a repair standing between you and normal.
Here's the path back. A licensed contractor with real gas experience comes out and locates the actual problem, because a shutoff tells you something's wrong without telling you what or where. Sometimes it's a fitting that's loosened over decades. Sometimes a run of aging pipe that's reached the end of honest service. Sometimes corrosion at a connection nobody's seen since installation. The finding gets explained plainly, the options laid out, and once you approve, the repair happens to code and gets pressure tested, the proof the system holds, which is exactly what the utility needs to see before service comes back on.
The same licensed path covers the planned side of gas work too, new appliance hookups, the range you're upgrading, the dryer that's moving, the outdoor line for the barbecue island, all of it installed to code and tested before use. Gas rewards exactly one approach, licensed, methodical, and verified, and that's the only approach on offer here. From shutoff back to service, or from plan to working appliance, the road runs through a licensed contractor, and it starts with a phone call.
"You called, a person answered, and the problem got handled. That should be normal. With us, it is."