Discovery drive vitality

The call center agents on the Discovery drive vitality promised to amend my account, and then when I check the App it is not amended or a reward posted as said. The goals on the discovery drive are ridiculous as it shows after the trip and the satellite (GPS) either puts the end point a 100 meters before or after the point, so much for accuracy . If that is not accurate then how can the other readings be accurate? So the speeding and braking are questionable. Discovery does not want to give out rewards!!!!!