Processes using large amounts of network

[Wnx]

Hello sevenforums,
Recently I discovered through looking in resource monitor that the processes in my (windows 7) PC were using on average 400kbps of my network. I have a 50g plan and was wondering how I could possibly be "exceeding the data limit", but I think this is the problem. The processes doing this are mainly multiple conhosts, dllhosts, msieexec, a ctfmon process, presentationhost and even notepad. (there may be more). The reason I know this is not supposed to happen is because years ago I had a 4g plan. I've also seen screenshots of people getting 1kbps. Could someone suggest why this is happening and possibly how to fix it? I'm not sure if this has been posted before, but due to my slow internet after "exceeding the data limit", it's difficult to search for it, so please provide a link if there is. My internet provider is Optus (sigh I know.)

On another note, when I scroll down, there are two svchost listening ports with adresses IPv4 unspecified and IP46 unspecified. I'm not sure what this means or if this is normal.

Thanks in advance for any advice given.

EDIT: I use cable internet.

 

[Wnx]

I would like to add these processes have become memory hogs. (Taking a few g in total) They cannot be stopped in task manager, despite the fact both msieexec and ctfmon (the main offenders along with conhost) are exes. Although I only have surface knowledge about computers, this implies to me they are completely unnecessary for my computer to function, but correct me if I am wrong. It claims "access denied" despite the fact I am an administrator. Needless to say I find this extremely annoying and unacceptable. Any help would be greatly appreciated.

Edit: forget 400kbps. Now it's using random numbers of mb. I would really appreciate it if someone could help me fix this quickly.