Choose your answer: is the following review positive or negative?

I think not.... I went a few weeks ago, ordered a hot chocolate..they brought the order about 15 minutes later, and it was warm, almost cold...I ask the waitress to replace it since I had ordered HOT chocolate and she took it back, stuck it in the microwave...and voila..."hot" chocolate...never, ever again....

Select from the following.
(a). negative.
(b). positive.
(a).