First, there is no need to duck targeted shops. Just be proactive; if, after three calls you do not reach the target, ask for permission to ask for target by name. Of course, you will need an explanation for why you asked, such as, "When I walked around the complex last weekend I chatted with a tenant who said to ask for Mary Jane."
No need to make 16 calls before seeking scheduler help. Be proactive.
ALSO, once you have established yourself as a reliable shopper for that scheduler, you may get a chance to be the FIRST shopper on a new wave of shops at an apartment complex; that is, with 6 LAs to be shopped, you get to go first and "shop anyone," provided that you do the shop early and then immediately report to the scheduler, by phone, who you got on site. Then the scheduler will be able to assign all of the other targets to less experienced/established shoppers who applied. So, do not just wait around for lightning to strike, in the form of an untargeted assignment. Most MSCs use those as rewards, but do not advertise that this is the case.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.