I dont do client work anymore so I dont mind sharing one of the best things I've ever learned. Not sure if this is common knowledge at this point, but when I started it definitely wasnt. To get past a gatekeeper at say a doctors office, accounting firm, ect. Call in. Helps if you are a girl. Ask if the doctor is in. Say you've got some information to send in (you can use your own creativity on how to word this), then ask for the fax # to fax it in. Send in your fax with your sales pitch. 80% of the time the business owner will get this from the secretary and you're foot is in.