Despite who the seller is, most companies have warranties on their product and will honor it. If this person is dishonest, he may have tampered with the product to get you to purchase another one from him (but we don't know this for sure). Despite this, I would contact Enlay as suggested. A well-known company wants to keep a good reputation with its customers and would prefer to fix the problem, rather than risking a bad rapp or you going to a competitor.
Another thing that a company would want to know is if they are selling to an unscrupulous dealer. This would be important information for them to have on file.