XS Cargo Return Policy Scam vancouver, British Columbia Canada

I bought a personal weight scale two weeks ago at XS Cargo. I clearly checked the return policy because I have bought faulty items from them before.

The scale was giving completley different readings on different days. 20kg differences from 1 day to another. I brought it back within the 30 days allowed. The staff member stepped on the scale 3 times and got the same reading. I explained that yes that too has been my experience, however it appeared to be a day to day thing not a minute to minute problem. He said well it looks okay to us, we'll test it everyday for a week and you can come back in 7 days. If we find it defective then we'll give you another scale at that time.

Has anyone ever heard of such a ridiculous scam. Why should I have to come back in a week to prove to them that their cheap scale is defective.  Their policy clearly stated that they would exchange faulty items. I wasn't asking for a refund, all I expected was for them to honor their own posted policies. I suggest you stay away from this store, they sell junk and don't back up their products.