Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Company's Customer Service Never Responded

ConcenTrace Trace Mineral Drops - 8 oz,(Trace Minerals)This may be a good product, but it doesn't list everything in it on the label. Instead, it invites you to go to the company website for a complete list, where none is to be found. I then wrote the company, but two weeks later I have not received a response. I use this to re-add minerals to my water after it's been subjected to reverse osmosis and ionization. After a Consumer Reports story on arsenic in rice, I wanted to see if arsenic was in the drops. I strongly believe that everyone has a right to to know what they put into their bodies or have contact with. If there wasn't room on the label and it can't be found on the website, it gives the impression they are hiding the details of what's in ConcenTrace.