If your Uber driver refused your destination then Uber gives you right to report about him. Please follow the steps listed below to launch complaint against your driver.
1- Launch your Uber app
2- Click on the three vertical small lines, mentioned on the top left of the app
4- Click on that trip which your driver canceled or asked you to cancel and trip details will be shown to you
5- In the bottom of the trip detail "help" must be mentioned. Select "My Driver was unprofessional"
6- Select the specific issue "My driver refused my destination"
8- Enter all required trip details and submit
9- Your complain will be launched and if it involves any cost, it will be refunded to you