Hello I have a Giant Seek 3 aluminium frame where somehow the rear rim has rubbed the frame creating a hole as shown in the picture. On the other side there has also been some rubbing/scratching but it hasn't created a hole like this side. I suspect it's unuseable/unsafe but just would like to confirm if anyone knows.
Update: Thanks all for your help.
I have decided to just salvage the parts off it and throw away the frame.