OT- Faulty goods/warranty claim

sorry for the off topic, but I know many on here are aware of consumer laws.
About 6 weeks ago we purchased a combined dvd/video from comet(nearest store
130 miles from here).
For the first few weeks we only used the dvd, which worked fine, then upon
trying the video part we discovered it was faulty.
Now that we have had the chance to return it they say we cant get exchange
or refund as the item is older than 28 days, it must be returned to
manufacturer and there will be a 21 day turnaround. Is this correct or is
there anything I can do?


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