discuss showing appreciation for service

 Writing a thank-you note or email message is a lovely gesture to express your appreciation, as well as your gratitude for the support someone has provided you.

These general thank-you phrases can be used for all personal and professional communications. Thank you so much, Thank you very much. Sending a business thank-you note is not only professional, it’s a way to build a relationship with your professional business contacts. I appreciate your assistance and look forward to your continuing to work on our account. Use these phrases to let someone know how much you appreciate what they have done for you: I am grateful for your support, I appreciate you. It’s always a good idea to thank everyone who has helped with your job search and your career or provided other professional advice or assistance: I am so very thankful for your time. I appreciate the information and advice you have shared. 

And that's what you can do when you get a good service.