Here is another option to measure customer satisfaction. This is a presentation was given at the International ISO 9000 Conference some time back.
A link to the previous post is below.
But I agree with other posters there is no requirement for a survey. We measure it by on-time delivery and we deliver most of the product to Canada and the all of the US ourselves and we have a "survey" at delivery.
Note: I am no way affiliated with the company that gave the presentation or their website.