Noticed a small natural gas leak on my pipework ne...

Noticed a small natural gas leak on my pipework near my gas meter that arpi's had worked on when installing a tankless hot water unit. Had atco come by and look at it and the service man said a pipe had just not been threaded quite enough in one spot. Called arpis and they're saying i have to pay a dispatch fee of $80 at minimum and possibly the cost to fix it, absolutely not the way to do business. Will be going elsewhere in the future.