I think it's clear even to a tree that in order to get good feedback on a job well done, the job has to be done:
a) Good, and even better than expected.
b) At the agreed price
c) On time or even sooner than expected.
d) Your customer service has made the customer want to send you a bottle of decent whisky right away!
Hello Mary,
You're being contacted by Umbrella and Pumpkin customer service.
We want to make sure that you are happy with our product and have no complaints.
If something has suddenly gone wrong, please contact us in any way that is convenient for you so that we can rectify the situation immediately.
However, if you are completely satisfied with your new purchase, please feel free to leave a review on our GBP to let others know about your experience with us and help them make a more informed decision.
And two buttons in a row:[1] WITH APPRECIATION and [2] I HAVE A PROBLEM.