I've gotten a couple calls from sponsors right after joining their programs, and I didn't mind it at all. A couple of them want to get you on the phone just to make sure your'e a real person before approving a new account. If I got constant calls from the same person/program or calls begging for traffic it would drive me batshit, but the occasional "is there anything we can do for you" call doesn't bother me a bit. In the digital age of interpersonal nothingness we live in it's kindof a refreshing change. Plus, usually I have a list of what any given sponsor could do for me
