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

The food is mediocre for the price. The service is continually the worst I have ever experienced. I keep giving this place chance after chance but I officially think they don't care about making money or customer service. What happened this last visit was after sitting down and ordering they told me their credit card system was down and I would have to pay cash or room charge of which I had neither--so they took my meal away before I could touch it and I left. I was appalled.

Pick from:
a). negative.
b). positive.
a).