got a call this evening but they didnt leave a message. I called it back but it went dead. seems like rubbish to me,

Rings but cannot be rung back, rang me at 7pm, disconnects me when I try and ring back. Spammer probs.

This number rings in the evenings (with me at least) and I don't answer it. It stayed connected to the answering machine for about 45s, but no message. When trying to ring it back, the phone rings for 2-3 rings and then just goes dead/busy.