Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defective; Returned

Ordered this using Super Saver shipping on a Friday night, received it that Monday. Great delivery time. However, when putting it together, the holes in the base unit and the stem unit did not match up no matter what I did, so it was impossible to insert the screw to connect them. (I did not have this problem connecting the light to the stem, so it wasn't me.) I returned it for a refund.Also: the diffuser does not look at all like it does in the picture. It is a cheap piece of silver-gridded plastic. The photo makes it look like a solid, opaque diffuser. I can't comment on whether the diffuser works, though, because I could never use the unit.