https://banksnews.gr/cosmote-%cf%80%cf%8e%cf%82-%ce%b8%ce%b1-%ce%ba%ce%b5%cf%81%ce%b4%ce%af%cf%83%ce%b5%cf%84%ce%b5-%ce%b1%cf%80%ce%b5%cf%81%ce%b9%cf%8c%cf%81%ce%b9%cf%83%cf%84%ce%b1-data-%cf%84%ce%bf-%cf%86%ce%b5%cf%84/