The phrase "detail of complaints" refers to providing specific and specific information about the things that people are unhappy or dissatisfied with. Full definition
Ask the creditor for details of their complaints procedure. (nationaldebtline.org)
For further details of our complaints policy and to make a complaint please click here. (thesun.co.uk)
The complaint should be made in writing and duly signed by the complainant or by his legal heirs with full details of the complaint and the contact information of complainant. (oneinsure.com)