Electricity Sales. Unsolicited call.
Relatively aggressive when advised their services weren't required.
They Rudely hung up when they finally believed me that I didn't need their services.

spam

Electricity supplier stating I could save up to 40% pay on time discount.
Extreme delay on line.

Won't leave a message just keep calling can't call them back either

Electricity sellers. When asked to stop bothering me they kept talking. So asked them to remove me from their database and hung up