Caller: Claiming they were from Telstra

After answering the call, there was a delay until they finally spoke. They had a very strong accent and asked how my internet connection was. I asked where they were from and she said Telstra and she asked again how my internet connection was. I told her I wasn't interested and she swore and hung up.
I don't know if this is a scam or just a really rude sales rep from Telstra.