Would you want to be associated with a brand that goes totally against your beliefs, makes use of child labour, produces chemical weapons, is known for heavy pollution, killing people, …? I think not.
If you don't want any of this, there's basically only one solution: quit using instagram altogether and kill your account. Before you do, download all your images first of course. For instance using instaport. Note: Instaport is finding heavy traffic at this moment (I guess more people are using it to ditch their Instagram account) so this could take a while…
Rights, Article 2
Some or all of the Service may be supported by advertising revenue. To help us deliver interesting paid or sponsored content or promotions, you agree that a business or other entity may pay us to display your username, likeness, photos (along with any associated metadata), and/or actions you take, in connection with paid or sponsored content or promotions, without any compensation to you. If you are under the age of eighteen (18), or under any other applicable age of majority, you represent that at least one of your parents or legal guardians has also agreed to this provision (and the use of your name, likeness, username, and/or photos (along with any associated metadata)) on your behalf.