Variants can be plentiful. Here’s just a brief list of potential possibilities.  Create a pleasant climate to turn the table back to them and to make them return to you. Do everything possible to show you care — and then subtly offer time options for another meeting. Arrange a video call with them. Do everything you can to create an impression of their control. Maintaining outer control makes them feel good and get on their good side.  Send them a postcard or a similar attention sign after the final break-up email. Let them know you hope they’ve solved the problem they addressed you with somewhere else. It can boost their activity towards renewing their ties with your company.