Dell Latitude 3510 Hinge Failed Again After Warranty Repair

My former employer gave me a Dell Latitude 3510 laptop as a gift. While the laptop was still under warranty, it was repaired free of charge once before because of a defect involving the right hinge and the display bezel, and the affected parts were replaced.
Unfortunately, the same issue has occurred again in the exact same area. I contacted Dell to report the recurring defect. At first, I was told that my complaint was valid because the same problem had reappeared, and a service request was opened. I was then referred to Dell's authorized service provider. However, when I contacted the service center, I was informed that the repair request had been submitted as a paid service and that the laptop was no longer eligible for warranty coverage. After I followed up with Dell by email, I was again told that they could only offer a paid repair.
I have retained the email correspondence regarding this matter, along with records showing that the same defect was previously repaired under warranty. Since this is a recurring failure involving the same components, I believe it indicates an underlying product defect rather than normal wear and tear. I respectfully request that Dell review the repair history, recognize this as a recurring issue, and repair the laptop free of charge or provide another appropriate solution without requiring me to pay for the same defect a second time.