Persistence is the magic key that unlocks almost all barriers. Nothing can withstand it. Keep bugging people until they at least do something about it just to shut you up.
Totally Biblical approach:
The Parable of the Unjust Judge (also known as the Parable of the Importunate Widow or the Parable of the Persistent Woman, is one of the parables of Jesus which appears in the Gospel of Luke (Luke 18:1–8). In it, a judge who lacks compassion is repeatedly approached by a woman seeking justice