Sorry to hear folks have had bad experiences.
I`m going to come out and say I`m a fan of the company, but because of the following experiences:
Back when my 1st Gen GG6 was spitting grease from the air outlet, I called to ask if that was normal and if they had any recommendations. I believe back then (right around when the 3rd gen machine came out) they sent me a prepaid label to send it in. They sent me a new current gen model and upgraded it to the long cord.
Bought a BOSS cannon when those came out. Worked awesome and was really happy with it. They then later did some revisions on the cannon which I think included a switch to full stainless manifold and a couple other tweaks. I called in to ask if there was a notable improvement over the initial batch and if I should consider selling mine to upgrade. I made it clear I didn`t have an actual problem with the cannon I received. They told me if I wanted I could send mine in and they would exchange it. It was long enough ago I don`t remember if I had to pay shipping, but I thought it was pretty nice of them to swap out a cannon that was working fine basically for the sake of my own FOMO.
Bought a G9 when those came out (hey - I said I was a fan, ok?

. Sold my GG6 to a coworker to fund the switch). Love the machine. Read reports on the internet that early run machines had a bad power cord, turns out mine was one of them. After a couple cars, the machine would cut out unless I articulated the cord just so; while not pleasant I was at least able to finish the job. Called them up, discussed that I tried swapping brushes just to be sure as well as described what was happening with the cord - they sent a replacement cord right out without waiting to receive my old one.
Short version - I broke my GG3 (4 years old I think?). Called in and asked if it was possible to buy repair parts, they said to send it in. They helped me out and gave me my original order number to put on the Repair/Return form you print off from the site. I did have to pay to ship it out there ($16 via USPS). When they had received it, I got a phone call saying they would exchange it for a new unit,
I just had to pay the price difference from what I paid for the GG3 (long cord) and the G8 they were replacing it with ($16.07). Shortly after a G8 arrived on my doorstep.
I will say any of my interactions were done during their normal business hours via phone. I can`t remember where, but I thought I heard somewhere the off hours folks are a different crew; I wonder if they don`t have the same jurisdiction for what they can do. I`m not much for trying to E-mail a company if I have complaints/issues, I just don`t feel certain that the 1`s and 0`s are guaranteed to get there and you have no way to be sure on your end.
Example - I emailed Greenworks a question about a pressure washer I was looking at. A week later, still crickets. I`m just going to end up calling them.
I`m with Setec - I`d much rather have a company be a little extra careful to rule out fraud. I bought a car out of state once and drove to get it. I got a call from my credit card company when they noticed all of a sudden there were two charges at a gas station instead of one and they wanted to make sure it was me. They apologized for bothering me - I felt the opposite actually.
Also, while I`ll buy Griot`s chemicals and towels from PBMG, I stick to buying equipment directly from Griot`s. Feels more akin to the relationship I have with the Snap On/Mac/Cornwell/etc tool guys that I buy tools from at work.
Griot`s also has their 180 day satisfaction guarantee; if there was anything they had that I wasn`t sure I`d love I would also buy that direct to know I could return/exchange it no problem.