Ok,..firstly, sorry this happened to you..id be pissed . But I gotta ask.
How long have you been running the engine since that oil change? What clued you in to suspect something was wrong?
( these two are gonna seem harsh, but I gotta ask)
Didn't they show you the dipstick after they changed it for you? (The express oil changes here are mandated to do that)
And lastly,..
Why are you letting an oil change center do something as simple ( and as detrimental) as change your oil?
How did you cut that filter open, cause it looks like you used a cut off wheel, and if you did, that would've filled that filter with a ton of sht just by cutting it open.
You'll have a difficult time proving that they added that much now that it's drained out. I hope you can though. Clearly, it's on them.
I think that you should take it up with them, but they have probably got processes in place to protect themselves from a claim like this...
That is definitely not pretty, and I've got the same process coming up ahead of me,...only if I find metal in my oil,...there's nobody to blame but me.
( and even if I do, I'm gonna refill it, and run it another cycle,...then do it again, and again until something starts making more noise than what's already making noise currently)