Popi act knowledge on staff

On returning an item. Why do you require my address and contact nr? This is certainly an over step on returning an item. And worse none of your staff is properly trained in advising why this info is requested. Popi act is specifically instituted for this as i have a right to know why this info is required and what it will be used for. If you are going to implement these kind of process train your staff on the law.