Thanks once again for your feedback. Obviously due to no internet Im
unable to reply as quickly as I would like.

News so far:

YahooBB needs to be bombed with dog shit pies from a great height.

I contacted my NTT as instructed by GOL and to my dismay they told me
that YahooBB is still 'attached ' to my phone line.
They said I would need to get a disconnection date from yahooBB before
they can do anything.
Well I got my wife to call and they said I have to send back the modem
1st and then they would give me a date.
Why cant they just disconnect my line? 
I feel trapped to them, and after having a lengthy chat to a very nice
GOL lady who told me that some yahoobb  defectors have waited up to a
month to be disconnected.

Is there anyway I can get this sorted out sooner? Legal threats? dog
shit pies?

Im now thinking it would be easier to just re-sign with this band of
retards rather than wait 1 month.

any comments/strategies would be extremely helpful.