Missed the call twice. Called back, haven’t got any response

Caller: I don't know

Called three times and cancelled before answered. No message left.

Indian accent - She didn't say where she was calling from when I asked. She just continued to ask if I received the new rates for our energy meter as rates were changing April 1. told her i wasnt interested

Voicemail left had the sounds if a foreign call centre in the background. I rang back but the call rang out.

Called back immediately, "number not connected"