Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Technical support sucks

I have no reason to doubt all the other reviews that say this product works fine.However, I needed to know how to write a program that uses this converter. I was disappointed that the user's manual doesn't say anything about how to program it. So I called tech support. The first person I talked to didn't even understand my question; he kept thinking it was a question about installation. He finally referred me to someone in manufacturing. When he called back, all he could say is "We don't document that, so we don't support it". I tried to explain to him that someone there knows how to answer my question since they distribute code along with the converter that does this. All he could do is recite the same thing.So if you think you might need technical support that involves something more than someone reading the manual to you, don't buy this.