It really amazes me that so many people are prepared to calmly hand over £20 - £40 to have a faulty section/rod replaced under the terms of a 'lifetime' warranty just because a manufacturer has put that in the terms of their warranty.
If you read through these warranties at some point it will state " this will not effect your statutory rights " or words to that effect and your 'statutory rights' are, as bruno pointed out, that goods should be of merchantable quality and fit for the purpose for which they are sold.
A rod that snaps on it's first outing, or even within a longer period of use (up to six years in some instances) providing it has not been abused, obviously does not meet those criteria and must be replaced or money refunded at no cost to the purchaser.
In the first instance, you should contact the shop you bought it from as the contract you entered into is with them and not the manufacturer.
There is a useful fact sheet issued by the DTI on the Sale of Goods Act and
faulty goods. It is in an easy to understand form and a copy can be seen here -
http://www.berr.gov.uk/whatwedo/cons...page38311.html
It's well worth the five minutes it takes to read it.
Your local authority trading standards department or the citizens advice bureau will be happy to advise you regarding what your rights may be in any particular circumstance.
Dave.