@Gary Josephs
Keep your head up. Every wholesaler has has this problem before. If it were easy, everyone would do it. You seem to have your basics covered (bandit signs, purchasing sellers, and mass mailing). Are you having problems finding properties? If not, you should try to post them on property websites (postlets, myhousedeals, craigslist etc.). That is a way to get your phone ringing. With a 9-5 job, are you able to freely answer your phone and take calls from the bandit signs? Those require you to be able to answer your phone at anytime. You let one hour pass, the likely hood of that person being a buyer for you rapidly diminishes.
I mentioned some websites to post deals that you get. Do some more research about some local websites that might be beneficial to you. I know in DFW we have a few that are very good. As long as the deal is good, people should be emailing/calling you left and right. I hope this helps! Let me know if you have any other questions or need some help. There are plenty of awesome people to help you on Bigger Pockets!
Regards,
Ross