No Customer Service

I used this app for a long time then it wouldnt work and when I tried to use it I was told to contact customer service. There are NO telephone numbers for customer service and e mails were ignored. I paid for this program and am now unable to use it. The major technical problem was that it would tell me to turn right to go south when right was north and vice versa. Sometimes the voice and the map were very different. I learned to glance at the map before obeying verbal instructions.

Eanraig about NAVIGON U.S. Central, v2.5.1