Well it seems like your skills in dectecting alts/pushing is just like your skill was to detect bots before the auto detect system got introduced. innogames and this support has 0 credibility when it comes to investigate and take actions against cheating. this alts problem will probably take...
You do know a few of this "independent" tribes use 100% of their troops /resources etc to push your tribemates. and im getting a good laugh when you manage to say 1 hc or so in support