Pre-Recorded Messages-Lost of LEADS??

[Robert Blocker]

Hello I've been in the Wholesaling business for about 5 months now, I decided to change my method on how i screen calls. I was getting a lot of Tire kicker calls. Now that I've switched my method to a pre-recorded message, it seems as if now I don't even get a call. I noted in my yellow letters to call my pre-recorded line so they already know what they are up against . 

Is this Normal or should I accept all calls coming into me? I have google voice so it should capture every call but now it just seems as if nobody has been calling and this has been about 2 weeks now. Let me know what you think and suggestions.

And i wanted to know wha is a good amount of Direct mail i should be sending out every month? Right nw im about 700 pieces