Failed repair

They came three times to fix my fridge but the problem wasn't gone . Pretty sure never filled up enough gas and when you try to ask why they find excuses. Lost R600 rand supposedly to fill up gas but in no time it was empty again and their excuse was they need to do a complete repair that included checking leaks and other components and regas. Paid R1600 and after the service still no luck the problem was still there. Had to find other company to fix coz if someone can't fix a problem three times you can't trust the fourth time