Well, I have done it all. They asked for photos of units, so I did that, they sent prepaid mailers for FEDEX, so I did that, 5 times. My supplier, CVS Caremark, sent replacement inhalers but after about 2 uses, same old problem.
Called my doctor explained the issue, and back on Trelegy. Not perfect, but it works. So, if Breztri ever gets fixed, I may try again.