Who called from 2504123301

I answered, got the tone, phoned back and also received the tone

Those [***] calls!

Its people using a phone card, that doesn't connect them properly ....

Google the number = third result is a police report for a scam where money ended up being sent to Quebec. The message I got was a woman's voice stating she was calling from a quebec based survey company...

Received a call from this number. Recorded message from a company in Quebec. Hung up. March 1, 2010 at approximately 6:40 pm.