Hi, alexis

Firstly, I would like to sincerely apologize for the delayed response as we have been experiencing an unusually high number of tickets. I am sorry that it has taken longer than usual to respond to your concern and your patience is highly appreciated.

1) Is it possible to create promotional code for my customers on my website ?

Yes. You can make coupons, ( more details);

and you can make Package of Services, with special discounts ( more details).

2) How i refund my customers

At the moment there's no feature for refunding Customers through Amelia, unfortunately. 

Amelia doesn't handle payments, they are instead done through our payment integrations.

Therefore, refunds have to be processed manually through the payment system for the time being. 

This feature is on our to-do list for one of the future updates, but I can't say an ETA on it.

However, you can speed the process up by submitting a request on this page.. As more users request a feature, it gets pushed higher on the developer's priority list.

3)How can i see the number of appointment my customers have take same for the seances paid but not scheduled

You can see this metric and others in Amelia Admin dashboard on the back-end.

Approved Appointments – This metric represents the number of approved appointments based on the date range you choose

Please check more details here.

Let me know if you have any questions. Thank you