Contact to WISPs (WAN or WLAN) in Greece required

As technical consultant for an international charity org, also active in several refugee camps in Greece, I am looking for contacts with WISPs, which can establish PtP-WAN-connections to the camps or setup WLANs within the camps. However, this will be two separate contracts.
For the largest camp we expect about 1000 daily WLAN-users. Sychronization of user-access will be managed separately, is not part of the contractors task. We consider a 20Mbit/s connection to be sufficient, although higher bandwidth welcome.
Other camps are smaller, down to 50 users, so satellite conn or 3g might be sufficient there for WAN.
These PtP-installations and the WLANS are not to be considered “permanent”. Short installation period appreciated.
Interested parties, pls provide link/email here.

Camps are located around Ioannina and Athens.

I’m not related to any WISP in Greece, but can assist technically if needed with equipment selection, deployment, etc.

fco.j.montilla at gmail