......... nobody here actually bother to email/call/live chat TM to change Interleaving to FastPath?

ONLY IF you agree for technicians to come over your house. DO NOT AGREE.

Inform the techinician who phoned that DSL "interleaving" and "FastPath" settings are configured from local DSLAM side, not user side. No point coming over to customer premise.

Please report back if you ever get it changed back to public IP. (Which is very unlikely now)
I got few colleagues whose streamyx got assigned with private IPV4 address and they were told to use IPV6 by TM.

because TM refuse to deploy unifi in our area.

argh.. they offered me 8mbps at 140... which is existing 4Mbps price.
Is the Unifi campaign still available ?

No, initially contact live chat to inquire the free speed upgrade thing which they create a report for it but it abruptly marked as "resolved" without contacting me.
At the end I send a email with my facts to argue with them, which managed to raise their attention within the same day where a representative contact me says that my service line are under a "VB" cabinet (where I didn't saw it anywhere nearby my neighborhood) which can't support 8mbps..so can't give free upgrade due to the "technical limitation". I know that my place can support to 8mbps since there are numerous tm telemarketer offer me before with
an top up (which i refuse to). Even the tm point and live chat also stated that my address can support 8mbps. Thinking what's the next step should I take or just accept the fact that TM won't let me upgrade unless I pay for it 

who stay like's apartment, condominium or flat they can get only 30-50mbps if fibre coverage. if cooper, they stuck only 10mbps. tm told me bcoz i am fibre area but i stay condominium. 15 august i can get only 50mbps from 30mbps. i says...amin n bersyukur.