Contacts re-appear after bulk remove (people.live.com)

Hi,

I need to remove all my contacts from people.live.com. I am selecting all, clicking on "delete". Contacts are deleted and in few seconds are back. I do not have any linked accounts. I do not have any device with contact. I just have sign that my Hotmail is connected to skype, but there are no contacts on skype. I don't know why these contacts are re-syncing and what is the source. Does anybody know what to do in this case?