Who turned down ACDC?

I'm curious, who exactly was the one who declined the opportunity to work with AC/DC? Was it a record label that passed on signing them, or was it perhaps a venue that refused to book them? Or could it have been a producer or manager who didn't see the potential in the band? It's fascinating to think about the missed opportunities and "what ifs" in the music industry, especially when it comes to legendary acts like AC/DC. I'm eager to learn more about this intriguing turn of events and understand why they were turned down in the first place.