Never expect right tools.
Last summer,

In a hot midday my air conditioner stopped working.Lahore is a big city ,there are hundreds of repairers.
I have contact number of a mechanic, he was a professional as my last experience. Called him for a appointment, he promised to come at that night.
But that night never came.
Called him a lots of time in night , but he didn't even response.
There was no option, only to wait for next morning.
Next morning , I visited a nearby market and deal with a another mechanic.
He took his tool box.
In the way to my home , he assured me that I shall never face this issue again in my air conditioner after his visit.
“ your air conditioner gas has leaked , and there is also a need of general service.”
He informed , asked for permission to start his job.
While his work he broke electric kit in air conditioner accidentally.
I noticed that he has not right tool for repairing. working with basic tools.

(It took more time , extra money to get rid of that issue. Decided to never hire a mechanic without proper tools inquiry)