1. check whether your phone line got any noise(if got better call TM to fix it).
2. check whether the filter is still in good working condition.
3. check whether the copper wire is expose at the phone pole or any terminal it connected to.
4. check your in-house phone line whether it need any replacement.
5. if all the above is OK, then the fault lies at the TM server, call them to get it fix asap.

Yeah!...finally its over...thank you to TMNUT, after 5 days on the rows having worst connection ever finally its back to suppose to be...super fast!!!. I hope this connection can last longer...crossing my fingers

Btw allow me to tell the story which are really amazed and gained my respect to screamyx for the first time...  

Call them yesterday morning around 9.30am (lodge report and ask them manually reset my port over the "pizza box" DSLAM), guess what within the same day around 2.30pm the screamyx tech (fortunately is my friends) call me (woaha! super fast respond i must say). Just told him about my problems and he said he will go to the pizza box whereby just 100 meters from my house. At evening around 6.15pm as usual fire-up all my gears and found the connection slightly better and the SNR margin increase from 30-34 to 39  . And today about 9.30am he call me again, just to reconfirmed that he already reset my port yesterday as requested and ask me about the connection goes...guys my problems being solved less than 24hrs after lodge my report...unbelievable...believable..this is what sometimes TMNUT can offer you...LoL!!!

Wow this things really amazed me...never got so fast respond like this before lah.  As today test no matter what ip ranging either 60.50.xxx.xx or 60.53.xxx.xxx the connection are so smooth and blazing fast...kudos to TMNUT!.

Don't you ever make me NUT! again...LMAO!!!