Thank you so much for taking your time to evaluate SurveySparrow. Answering your questions, it is not possible to import a survey. But, you can export the survey results using APIs. The rest of your requirements - I think it should be possible using SurveySparrow. Currently we are working on an API to create surveys.
For your convenience, here is the link to our API docs - http://surveysparrow.com/developer/3
I was just curious - What exactly would you like to achieve using the API?