Does anyone no where I stand I bought resin and hardener not from easy composites,I infused my part but have just noticed that I was supplied with wrong harderner I think part is screwed,would it be the suppliers fault,I asked for resin and appropriate harderner.if part is screwed would they be responsible for materials as well.

You're asking the wrong people if it wasn't from EC, go and talk to the supplier about it. Either they will be apologetic and replace your resin and maybe your materials, or they won't. And if you really feel like you've been wronged and it is worth the effort, then you might take the appropriate legal action.