The secret to get valuable feedback is - asking for feedback. Share a simple feedback link with your customer, either on a beautiful paper card or on-line and request for feedback. The link looks like belowfeedback.tel/example
Your customers will go to this link and provide their candid feedback in text format. No rating, no stars, no more lengthy survey questions. Just one text for them to write their words for you.
As soon as the customers send their feedback, you will receive it in your email along with the feedback date and time. Your customers can provide the anonymous or they can share their name.