How to do deal with a friend who I feel has been using me for their social media?

I have a friend who ask me multiple questions such as do I look too fat too skinny, are the colors, write, the poses, etc.... I want to put this one in but it doesn t match with my other posts, what about this caption or that caption. Yet I have been trying to get a social media marketing job or something similar they have refused to be a reference because according to them they do all the work such as the editing the positing it to their instagram, the promoting it by using hashtags. This person has also be prone to give out my information to potential jobs without my permission and quite a few times these potential employers thought that this person has worked for me when we were just co-workers also is it that they are actually telling these people I m their boss or is it that these people just assume that this person worked for me. Please help.