Same here, I ordered a Shake Weight, now I am also receiving calls from the same number. They keep calling but never leave any messages. I just blocked them.
So I just got this call again and this time I held on the line waiting for someone to say something. It turned out to be from a Potty Patch I ordered online yesterday. They call to confirm the order and then try to sell you on some other product they're offering. Be careful as the benefits of what they're offering may sound appealing, but you must learn the catch. They'll set you up on some sort of program "Free for 15 days", but if you don't call and cancel within that 15 days, you may be charged. Just a heads up!