They have been calling 3-4 times a week for at least a month, no message left.
display shows SIDEMCO. Search at www.canada411.ca shows

Sidemco Inc
4305 D'iberville, Montréal, QC H2H 2L5
514-940-1503

Yet another [***] Telemarketing Call...

I received a call me too from this number, but 411.ca is not able to identify it !

I not answer to this call, the guy has leaved a message in vocal box and it was "gargling" when he was speaking.

This is what the caller company does (taken from their web site):

"We are creating and broadcasting on our private TV network a dynamic image of your business illustrating perfectly all your products and services to a perfectly targeted clientele inline to obtain the full potential of our visual service."

They don't seem to like to leave messages - they must wantr to speak with a live person to make their pitch ...