I know them as spring hose clips. I use Mole grips to release the clamp action, though there is a special tool available to unclamp them but ....... as has been suggested, replace with a good quality worm drive (Jubilee) clip. On this subject, I use a socket on the hex screw head, having suffered injury via slipping screwdrivers. Also does 'em up nice and tight.
It will be all right in the end. If it isn't all right yet, then it is not yet the end..