Treating customers unfairly

An chainsaw was returned to them for a safety feature missing. The bucking spikes. This item has a year warranty, yet they have done nothing. I have been told that it must be returned in 7 days, then what is the warranty for? How can an integral part of a dangerous machine be missing and I am just told returned request denied. Nothing about sending it in to have the part added or some kind of response. just request denied. Now I am trying to get the faulty item back that I have paid for, I still have no idea where it is or when I will be getting it back. This is not treating customers fairly. Very very poor indeed.