William Hopkins from Birmingham was left with a fractured jaw after being beaten and robbed.
He was returning to his home in Gooch Street when he was attacked.
The 78-year-old pensioner tells ITV Central of his injuries.
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Research shows more than two billion nuisance calls were made last year, the majority to people aged over 65.
Cold and windy with sunny spells and occasional wintry showers.
Sunny spells and blustery showers on Tuesday.