If this comes up again, assuming you're a member, I suggest going to Costco in Polaris. The Easton location does not have the equipment to develop film but the Polaris one does and the prices are much better than I've seen from a lab you have to mail the film to. I had four rolls developed and scanned for under $10. Since Cord closed, that's the only local place I know of for sure that still processes film on-site. You might also try the Target in Easton, but I haven't checked there in years. Like others stated, you probably confused them by mentioning B&W. Just take it in. If they say anything, point out where it says C-41 on the cartridge. I had to do that to get Target to process it once.
Where did you call that said they would do 120? The only local place I ever knew of was the 5th Ave. Cord, which stopped doing it on site a while before they closed. I use the Unicolor C-41 kit myself, but it would be nice to have a local option in case I get backed up and can't find the time to develop for a while.