The quickest way to complain about DJI products is to contact the manufacturer directly.
You can find the DJI service registration page here (please use your DJI GO app access data to log in):
Optionally, you can also use the service hotline and service e-mail address.
Phone: +49 69 2000 1834
E-mails: support.europe@dji.com
Products whose warranty period has expired or which have been damaged through your own fault can also be repaired by us on the basis of a cost estimate. Please contact our support team for this.