Marketing Suggestions for newbie

[Brian Dailey]

I am a new investor still learning and looking for my first deal.  I started a direct mail marketing campaign about 8 months ago.  My leads have been coming from driving for dollars and lists I have purchased.  The lists I have purchased are for targeted areas with absentee owners and another list with high equity percentages.  All together I am mailing about 700 post cards to leads every 30 days.  As of yet I have not received any contact back from any of them.  I know it takes time to find leads but by now I expected to get some type of response even it its just someone telling me remove them from the list.  I provided them 3 ways to contact, phone, email, and a form on my website.  The phone goes to a google voice number that goes directly to my cell and there aren't even any missed calls.  Am I just being impatient or should I have heard something back my now?  I was considering changing my mail piece but not sure if its to early to really tell if its working.   How long do you guys give a mailing piece before you decide to change it.  I have attached my post card for your review.  I appreciate any feedback, tips, or suggestions.  Thank you all very much in advance for your help.  I have learned so much from this site.  

[Brian Dailey]

I call the google voice number at least once a week to make sure everything is working properly.  I also test the submission form on my website at the same time to verify that it is working.  I do receive cards back that are undeliverable and either scrub those off the list or dig deaper for an alternative address.  Thanks everyone for the suggestions so far.