called re my Telstra internet connection. don't even have internet with Telstra!

This pain just tried to call me.

Said they were Telstra and I had an error that they wanted to fix, and that my internet was slow, so I needed to log on to my computer so he can help me fix it, he sounded dodgy and was almost annoyed when I said that I don’t have a computer, (I do, but I didn’t trust him so I don’t want him to know), he then instantly put me on hold for no reason, so I hung up

Possible scammer try to gain remote access to my computer

Caller posed as Telstra employee. When asked for employee number and job number, the caller pretended to not understand me. I terminated the call

my Internet is very slow and would like to fix the problem by connecting to my computer.