In a hearing at Wolverhampton Crown Court on Friday, Moses Smith was handed a sentence of at least 12 years for manslaughter with diminished responsibility.
Smith blamed Easy4Insurance, the firm where his victim, Abdi Mohamed worked, for losing his life savings. The day of the attack in 2021 he made repeated calls to the firm, asking to speak to Mr Mohamed.
Judge Michael Chambers KC said there was 'no evidence, in any way' that Smith had been defrauded and referred to it as 'a delusion'.
Despite initially being charged with murder, Smith's charge was later reduced to manslaughter due to a psychiatric report suggesting he had impaired judgement.
Since his death, a community centre bearing Mohamed's name has been built in Somalia using money raised in his memory.