Facebook being really sketchy, some insight?

[Kendal]

I posted this in the facebook section but figured nobody there would know anything on this topic as they are all asking about farms and stuff..

So on my phone, I direct my browser to facebook.com, and it loads up. Just recently, everytime I load it up, i get the facebook login page in a mixture of the regular english language, but now also in Swahili.

To make things sketchier, there is a simple text-only advertisement on the bottom of the page:
"Vodacom Cheka Internetfor just Tsh 500 per day! Dial *149*01#"

I have never noticed any type of advertisement on the mobile facebook page. I only started to notice this when facebook would display "Get FacebookYa Rununu and browse faster." which I would normally get in english. Also, the URL is still facebook.com when I am on it, so there couldn't be a virus directing me to a fake facebook look-a-like...

What is going on? By the way, this is happening on my Nokia E73.