Multiple GFCI receptacles, Fridge is tripping one it ins't plugged into
You should avoid plugging fridges into GFCIs any which way you can.  Refrigerators are the exact opposite of the use-case for GFCIs.*

However, the latest version of Code requires GFCI devices in garages.  It's a pity; old installations are "grandfathered" and you are not required to retrofit GFCI.  We are recommending that you use any means possible/necessary, to arrange your wiring so the refrigerator/freezer is on a "grandfathered" old outlet not on GFCI, and this outlet is a single outlet labeled "Freezer only". 

You might think "Oh, I'll hit Habitat for Humanity Store and find some old, ugly, painted-on boxes, receptacles, covers, conduit and/or cable, and some rusty screws to make the installation look old".  I couldn't possibly advise such a thing. 

Now if "3 GFCIs on one circuit" is true, this guy's either dumb, or so smart he looks dumb.  Generally, fridges notwithstanding, one GFCI device can protect the whole circuit.  There are reasons to put multiple GFCIs on a circuit (like a fridge at the 3rd receptacle), but pressing "test" on one GFCI should never knock power out to another GFCI.  If so, the second one is useless and should be changed to a plain receptacle.  The spare GFCI can then be used to protect another circuit. 



* Fridges are 3-prong grounded, metal chassis, all the electrical gear is in the bottom back where it is wildly inaccessible, you are unlikely to drip hollandaise sauce into it, and you probably won't drop it in the sink. They are also expensive (not cheap throwaway countertop appliances) and contain a cyclically operated  large motor that is prone to minor ground faults, which are factors that are anti-GFCI.  Further, there's another life-safety issue: food spoilage.  So you have "dueling safety features", like a low-oil-level shutoff on a fire pump.  Do not sacrifice the warehouse to save the fire pump.