Do you have a Dremel Tool? I use that to cut the clamps, then you can hopefully pull the old connector out and replace it using a hose clamp. The other alternative is to cut the line down about 6" get a short piece of PEX line from either Home Depot. Lowes, Menards and use "SHARK BITE" fittings to do the repairs.
PINNACLE 2015 38FLSA. aka: "Roam Sweet Home"