Ditto on returning it, and make sure they refund the shipping cost as well!
I've bought loads of pre-owned stuff from GC & I only ever twice got more than just the guitar & the case or bag.
Once they shipped me a Aguilar amp that said it had a case in the listing, but when it arrived, no case. They did eventually get it to me, though.
The good news ones were a B.C. Rich Warbeast that arrived in a nice (but flimsy) coffin case with the Floyd Rose vibrato arm in the case's compartment.
The other was a Ibanez RG920 that came with a premium gig bag with all the tools & parts in it, including the original strap buttons, which had been replaced with Dunlop locks.
My most recent buy was a fiasco, though.
The guitar clearly had a vibrato arm in the photo, but arrive w/o one. A standard Floyd arm will not fit a newer Ibanez. They design them that way on purpose.
GC shipped me one, didn't fit.
I got on the phone with the store manager & even gave him the part number for the proper vibrato arm & he ordered it from Ibanez.
When I got it, guess what, it was for a completely different style of bridge, not even close to what I had.
In the end I returned the guitar, because the crappy bridge wouldn't hold the strings in during a proper divebomb, and the tuning changed twice daily in response to a 2F drop in temperature.