I belong to a group chat on what's app, and a horrifying thing has happened. A wise...

I belong to a group chat on what's app, and a horrifying thing has happened. A wise *** friend of mine used my phone to send some highly inappropriate photos and videos to this professional group by mistake. He meant to send it to a mutual friend. A fellow group mate, the admin for the group Lavert Benefield, called to tell me about it and delete it right away. I was so hasty to do so, when I saw delete come up, i hit the button so quickly, it hit the wrong option and only deleted it for one person, I think my phone. I can't find a way to permanently delete this inappropriate content from this professional group. My friend in in deep **** over this and I am hoping you can help ASAP!!!!!! Before the whole group sees these inappropriate pictures, videos, and messages not meant for this group! Can you please call me right away, or email me right away and tell me how to delete this from the group ASAP? Thank you. Chris Hyatt, ***-***-****