Subcsription to Zigma

Can someone tell me please if this site is from our wordpress university group? i seem to have got myself subscribed to it and it is taking over my in box and has nothing that I would want to read ( sorry if it is someone here but I doubt that)

I wanted to unsubscribe but was taken to a WordPress page that everyone  from 101 ‘s blogs are listed. it wasnot there

Any suggestions please?

this is the site