Game has terrible product knowledge

I bought a overlock sewing machine and its now only 6 months old and its been giving some trouble so I took it to the store and booked it in for repair and game called us a about 2 weeks later telling us that we need to pay for the spares,i was told at the store that I must read the manual and it states which spares are not covered in the warrantee,so I went and read the manual and it doesn't state any of that sort,so from what I know as long as its still under 12months old the machine must be repairs at no charge as its still under the warrantee, if this is not sorted out soon I will take it to consumer watch and expose to the public,i knw my rights as a consumer and im pretty sure that the cpa law states I can get a replacement if the machine has a out of box failure and cannot be repaired,i refuse to pay for something that's still under warrantee