Bests & Worsts Reviews from Amazon

I purchased this for my elderly frail Mom well, put on on the lightest setting as instructed. It threw my Mom on the floor like an ejection seat on a jet. I went in to return it & was denied. I have no use for this obviously UNSAFE Item Then I try to create a RETURN= the item is NOT returnable? Since when? I went to the description and no where does it state STUCK with it. My Mom's money doesn't grow on trees. This is disturbing.