Thank you for sending me the e-mail telling me about your product. However, when I responded to the e-mail suggesting that you call me at a certain time on a certain date, it would have been best had you called me at said certain time on said certain date. When I was then nice enough to take the initiative the next day to reschedule our phone call — even though you had in no way contacted me — it would probably have helped your cause had you then kept that scheduled phone call.
Also, it would have been nice if, after missing the second scheduled phone call you’d made that third re-scheduled phone call. Or at least if you’d been in your office when I called you ten minutes after the scheduled time for our third phone call.
But it should not surprise you that when you call me at a random time in the afternoon, two business days and a weekend after the third scheduled call, I might not be inclined to take your call.