Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Flickering - but amazing customer service

First we have to say that the Bulborama service was amazing - they did everything they could to assist us with our issues. Unfortunately using the bulbs in numerous fixtures, and trying new bulbs sent to us, they continued flickering. The flickering does stop when you turn the unit off, and then on again - but starts again after about an hour. The light is bright and shows true color. The customer svc rep told us it may be our fixtures. We will have to see how other brands of bulbs work in our offices. Again, we were very impressed with Bulborama's service.