Wow, I heard complaints of this happening but just thought people were exaggerating or being overly cautious or something... guess not though. I know you can dispute the copyrigt claims without much penalty if you like, but must provide a reason for doing so and 'it was playing in the background' isn't necessarily grounds for that but u may be able to try... let us know if you do try 😋
I made a video once using a song which the copyright owner had completely blocked and tried to dispute the claim on the grounds that 'it added extra meaning to the original work' and would therefore fall under fair use but they didn't seem to see it that way 😤 I always use the youtube copyright checker before choosing a track now but for situations like yours its a bit ridiculous that they take it that far