Instruct: Classify the given review as either positive or negative.
Query: Please do NOT buy from this company

I bought the Doughmakers cookie sheets in a very nice store in my home town. After about a month of use, they develpoed a very nasty, sticky brown crust. I contacted the company by e-mail and received a very snarky, nasty reply. The reply only told me what I must have done wrong, only I had done nothting wrong in the care of the sheets. There was not an invitation from the company to discuss anything, just a dismissal that I must be quite stupid. Luckily, I was able to get the nice store to stop carrying the Doughmaker line, apparently there had been complaints before. Please do not buy from Doughmakers.