As I said, consumer law and distance selling regulations apply here. Clearly they were not fit for purpose to the point of being outright dangerous.
How did you pay for the hoses, was it credit card? if so call your card co, explain the issue and they will do a visa chargeback, simples.
How did you pay for the hoses, was it credit card? if so call your card co, explain the issue and they will do a visa chargeback, simples.