Caller: Indian speaking lady that didn't identify herself

Wanted to talk to me about my internet connection, I asked to be taken off their call list and she became aggressive.

Keep calling on numbers with one or two digits difference, sales/scam. I've asked them to take me off their list and they still ring.

Constant barrage of calls with Victorian number but lists as Darke Peak in WA. Indian type of people who claim to be from Optus, are really persistent and will not get off the phone. I've asked them to take me off their list but I'm getting more calls than ever. I starteed to hang up on them. I keep blocking the numbers on my phone as they come in but they still keep coming with a slightly different number.