they called, I was busy, didn't answer but they didn't leave a message

Just got two calls, anwered the second. Recorded voice message that said "Hello, we have an important call for you. Please hold" and then hung up...

It's gotta be telemarketing.

i called back.  telemarketing specialized in membership renewal they say.

They called from that number and did not leave a message. It must be a telemarketing scheme