You have to pinpoint and develop that. Usually probably the most common ones are probably through exchanging emails or even telemarketing.
This access could be in a data or business intelligence dashboard format, as well as simple as dropping all feedback responses into your e-mail. https://www.digitaljournal.com/pr/news/press-advantage/freshbi-provides-power-bi-apps-for-businesses-looking-to-visualize-their-data