We have learned that if we don't receive the issue after the 1st claim, direct intervention with the vendor does help, though I agree that publishers will try and say that you didn't claim within the correct time period.
Repeated claims and lacks does make us look more closely at these titles during the cancellation process.
But my other pet peeve is when you cancel a title and the publisher does not send you the final issue(s) that they owe you. And then, when you claim them, they tell you that its cancelled.
Hanover, NH 03755