Mobile phone giant Vodafone confirmed today the closure of a call centre in a move putting 650 jobs at risk.
The company announced the closure of the site in Birmingham in February next year, with work transferring to other centres.
Union officials attacked Vodafone over the move, claiming staff had suspected the site was likely to close for months but had been left in the dark over their jobs.
Vodafone said the site at Brindleyplace would close in early February.
The statement said: "These proposals will result in approximately 650 roles being put at risk of redundancy at the site.
"It is planned that 500 of the roles will transfer to other Vodafone customer management centres.
"Additionally there may be roles within other parts of Vodafone that those affected may apply for."
Vodafone UK's consumer customer management director Jane Hext added: "Our customers expect the best service at the lowest cost in this very competitive market.
"We are aware of the effect that this decision will have on the team in Birmingham and we will be doing all that we can to work with them in the coming months to help them through this difficult period."
More on this story in Wednesday's Birmingham Post