Dealing with unwanted content online is a headache, but you don't have to stay...

https://wiki-cable.win/index.php/How_to_Submit_a_DMCA_Takedown_to_a_Hosting_Company:_A_Practical_Guide

Dealing with unwanted content online is a headache, but you don't have to stay stuck. Start by taking dated screenshots for your records before you do anything else