Inspiron 5547 laptop has broken plastic around right hinge

I purchased a Inspiron 15-547 and now have broken plastic around the right hinge. This is said to be a known issue with this specific laptop yet Dell is telling me I have to pay for the repair? In the advertisement they claim that it was tested for 20,000 openings and closings. Are you kidding me? I haven't even opened and closed it for 10,000 times and it is this bad. SAD! This is not something I expect form a company like Dell.

How it is described to customers:

The best part:

"Call us excessive, but after twisting an Inspiron laptop's base and lid more than 25,000 times, we can assure you the parts inside are well protected."

Excessive with the zeroes in the number of tests maybe! Mine is not the only case where this has happened there are many others with the same complaint. I'm wondering why Dell did not recall this laptop so I would not have purchased it in the first place.

The reality: