My account was hacked and I don't know how to delete the messages

Hello,

Recently I had some away time from social media and didn't go on Instagram, but during this time my account was hacked and a lot of messages were sent out to random people from my account. Each with scam money posts and some other thing I can't translate because of the language gap, but I have my account back and I've changed all the details, I just don't know how to get rid of all the DM's and the constant recommendation of the people the hackers messaged.

Can someone please help, how do I get rid of the DM's and recommendations?