Help!!...make decision!!

I have to make a decision by Friday(16 Oct) and i have no idea how to decide!
SO calling for help now!

I have to internship offer now.
Company A n Company B
well...i sort of already accepted Company A,
as there was no responds to the other companies.
However, jut got a call today that Company B is giving me an opportunity too!!
and company B is more favorable.

going to list the pro n cons.

Company A
Pro
- starts on 4 Jan to 15 Feb
- at 3rd mile (near my house)
- people sound very nice

Con
- not very professional, as in the way they reply emails (but they reply very fast la), no interview needed
- pay unknown

But however i already accepted them, actually i ask when was the deadline for me to accept. Then they either din get what i was asking or what and say see you on 4 Jan..

Company B
Pro
- better image (name sound)
- more professional(handled by HR from KL), eg phone interview
- in the city

Con
- starts on 7 Dec to 5 Feb (going back on 6 Dec night!!)



Obviously i would prefer to go to company B. But because i already accepted company A i feel bad and some more Kuching so small...between industries later find out i ...blacklisted la (maybe not so serious la)...
But if i pick Company B i will have to go to work the next day at 8.30 not even after 24 hours in Kuching ground!!..
this can be sort la..change flight...but my family will all be in Melbourne then...

So dono how...
Please Help!!

THanks

TIck Tock TIck Tock

Stress level very high right now!!
feeling so so lost!!
Don't know where to start from!
which subject to start first?!

stupid equities?
headache accounting?
crazy law? or
hating finance?!!

i have no clue where to start from!!??

only 3 weeks to go!!
I'm running out of time!
stress level blowing my roof top!!