Hi Eagle,
At what RXLEV are their signals in your country? If their signal level is too high, I think you should ask them to either reduce their output power or downtilt/re-orient their antennas. I suppose there should be laws( by the ITU) which forbid foreign operators from shooting into other countries with a very high signal level. I don’t know the exact details, but I’m pretty sure there would be such a law.
Regards,
SHELDON