Recent research by Ofcom shows that, during a six-month period in 2012:
- Almost half of all adults (47%) with a landline experienced a silent call
- Almost three quarters (71%) of landline customers said they received a live marketing call
- 63% said they received a recorded marketing message.
More top news
Winds will strengthen to gale force by dawn, these severe across exposed coasts and hills particularly in the southwest.
A Swansea charity worker says he was left "shocked and saddened" after being questioned by counter-terrorism officers returning from Iraq.
Our Valleys Correspondent Hannah Thomas has been exploring the beauty of Blaenau Gwent.