I have started playing with hr and hr_contracts and have some strange behaviour. 3 customers have been created (I hadn't even installed any sales module myself) automatically.

1. has the 'home address' of an employee as name. No other data
2. has the 'working address' of the same employee as name. No other data
3. has a part of the name of this employee as 'name. no other data

Any ideas how such can be avoided?

• I have deleted #2 and now this 'working address' is not available anymore (there is a drop-down menu in the card of each employee where this can be chosen).
• I have 'deactivated' #3 which also makes it unavailable form the 'working address drop-down menu