The company I work for offers a service for Germany based customers where they can register a calltracking number and get usage analysis - all for free.
Check it out if you're interested:
https://heldennummer.de
Does it have any affiliation with lieferheld.de/ ??
The reason I ask: I hate their, and their competitor's pervasive and mad behavior, when it comes to pitching their own product, whilst DDoSing etc. their competitor.
