Appreciate those who answer and assist me here

Juz called 100 n they mentioned my Tel Number is available for 4Mbps only. 8Mbps ta dak
My landed house already 13 yrs and at the moment using 0.384Mbps Streamyx. Pls dun laugh at me.
1.) Is my Old copper line support 4Mbps?
2.) Will i get a stable 3.3~4Mbps without frequent DC
3.) Will i get support from any TM technician to assist me getting a Stable 3.3~4Mbps speed if i subscibe this package? Or risk bare by me .

Here is my Riger datas. Thanks

Downstream Upstream
SNR Margin (dB): 33.0 29.0
Attenuation (dB): 14.0 5.0
Output Power (dBm): 11.9 16.6
Attainable Rate (Kbps):11840 1248
Rate (Kbps): 1024 384

Thanks for clearing up my doubts