I can imagine that this might be harsh to experience. But how is funcom supposed to solve the problem? If they want to punish for building abuse they can only ban clans, not individuals…
You can read the “new” guidelines for this here:
for one:
“It also falls under your responsibility to make sure no one in your clan is abusing game mechanics”
but also:
" If you want to appeal a ban , you will first have to have read these rules and make yourself aware of them. Once you have done that, get in touch with us …"