I want to share with you my experiences with Sunwayman customer "care". I complaint damaged part, they promised to send me it, forwarded me to my seller where I bought light, then told me they send him new part for me, but I still have nothing and they ignore my emails now. Sorry but I can not recommend their products any more.
Hmmm, the long-term reliability of the light is an issue I mentioned in the review, as any accidental tripping of the carrier fuse would require a replacement carrier (which may be hard to get as time goes by). This is the second report I've seen on the unavailability of a replacement carrier recently, which is worrisome - it suggests my theoretical concern (at the time of review) is now becoming a practical one.
I recommend you follow up with the manufacturer again, letting them know what the dealer said. I'm not surprised that dealers don't have inventory of replacement carriers. Hopefully there is a miscommunication issue somewhere, and you can indeed obtain a replacement. Good luck, and let us know if you have any progress in resolving this issue.
EDIT: While I don't recommend people try to disable the fuse, that is an option if you are stuck with a blown fuse and no replacement carrier available. jh333233 posted just such a mod in
this post. Note that if you do this, you MUST stick with using protected 18650 cells in the carrier (as that would at least provide some catastrophic short protection). You are much better sticking with a fuse-enable carrier, if at all possible, as you really want to avoid potentially shorting 18650 cells.