I bought and replaced a new serpentine belt in June(2012) and have covered just 200mls since and now the belt has snapped. A mechanic has looked at the tensioner and pulleys that are fine and rotating freely.

I contacted the supplier who didn't seem interested in replacing it until it has been sent(by them) to the manufacturer and tested. In the meantime they suggest I buy another from them and await the result of the tests. Is this the correct way to go? Do I have any rights under consumer law to demand a replacement immediately?

I was willing to go with a straight replacement, but now I feel as though I should request the costs associated with a replacement, ie: new belt and additional costs for a mechanic to fit it once again. Is this acceptable under law?

Thanks.