IF there was an actual guaranty, whose existence and terms you can prove--and not just some unenforceable expectation about their longevity--then you might have a cause of action; note however that if you had already committed to having the work done before you asked how long they would work (i.e. the braiding had started), then anything said is likely not enforceable.Proving an oral or verbal guaranty can be difficult. The most you could sue for would be the cost of the braiding--you can't sue for more compensation than the actual loss or injury you incurred. And lawsuits, even in small claims court, have costs...in short, it is almost impossible to imagine that even if there were a guaranty, that it would be worth the time, cost, and effort of suing.