I went into CJ's Pay Per Call interface this afternoon to find 2 of my approved merchants suspended. One of which I was just approved for the previous day (?) and the other I was actively promoting on Google and Bing (money down the drain).
No warning email from CJ, BTW.
Lesson learned: start each day checking merchant status.
FYI: I've had no success direct linking WAP campaigns on Google or Bing. The few calls that were generated were either too short (accidental) or a repeat call.