One who speaks good "England"

I have a co-worker who graduated from some university which I do not wish to disclose the name here, with a degree in Physics and speaks extremely good "England". Here are some of the examples:

1 = wang
6 = sick
8 = egg
double storey = lubber storey
one week once = once week wang time
he didn't come = he no come
I told her = I told to her
effective today = affective today
efficient = e-ficient
rooftop = rules-stop **NEW** *Spoken today*

At times, I do wonder if she has taken any English course back in her university or perhaps she wasn't paying attention to her lecturer. She can't even get the pronounction correct left alone writing a short and comprehendible paragraph. I'm not trying to critic her English over here but she raged the fire in me, that's why. Bad mouthed, back-stabbing people, loud speaker, bad breathed, incompetent, good at making up story etc just to name a few.