Misleading advertising

I decided to go with Afrihost for my first time Fibre connection because they advertise that the first two months are free. In my books, two months, mean two full months (60 days). However, since my line was activated on the 29th of August. (two days left of August) they counted August as the first month and September as the second. I haven't even been connected a full month yet and already I have to start paying on the 1st of October, (32 days into activation)... So it's misleading.