Called on 20/10/2021 at 1030am. She says she is from SingTel and is a technician. She says my internet line is being compromised and many people are using my internet. She wants to help to check. Many people are also facing the issue of slowness because of that.
She asked if I was facing slowness in the internet last few days and I told her my internet has not been slow.

When I asked for authentication she says she has my SingTel customer id. I asked her for her name and contact so that i can call back after verifying my customer ID but she could not give my customer id and then hang up.

I tried calling back 68268862 and no one picks up