In the post you quoted and visible within your post .....
"The manager looked up the troybuilt model # said the troybuilt saw was a home depot exclusive ,"
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Lowes has an 800 Customer Service number you could try calling. Have the original receipt handy and the box so you can read them any of the numbers they might need.
1-800-44LOWES ( 1-800-445-6937)
You can also try emailing :
CustomerCare@lowes.com
Include as much information as possible including the receipt date, amount and transaction numbers. Also a picture of the box label showing the serial and model numbers.
I've had pretty good luck with them correcting issues on the first contact. There is a possibility they may be able pull the SKU and serial number on the box and see if it was sold previously.