Did anyone facing the same problem? Suppose my package is 1.0MB but suddenly I find out it change to 1.5MB when connected, but the line become suxk and bad.

When connected, starting is very smooth but when use more than 30 mins, the signal become very poor and until no signal....

I have try to call TM but they saying the system no change on thier site, but this problem is still there even I change my modem, please give me some solution, thanks.