just got a call from this number no message left

This number calls me twice a day every day on my mobile no connection made

This number called me I have narrowed it down to somewhere in coneiticutt (sorry for spelling) my partner answered it and they asked for me via last name he told them it was late and I wasn't going to be happy so they put phone down I rung back the person on the other end said they didn't recall ringing my landline number asked if I was someone called shelley they sounded like a random confused person then said they didn't know what happened getting well annoyed with the calls it keeps waking my 1 year old son up

got a call on my mobile today which showed this number. girl said it was Scottish Power wanting to talk about energy tariffs-hung up as not interested.

 ? who called me