Refusal to repair a server cabinet fan

We purchased a server cabinet from Linkqage in February 2017. There was never any mention of warranties. There is now a problem with the fans. The first time we called they said there is a 1 year warranty and we must bring it in. When we sent it to them they said the warranty is 6 months. This morning they say it's 3 months warranty and it's the customer's responsibility to ask about the warranty.