Breast screening hotline staff is only given one hour of training before dealing with women's cases, it has been reported.
Call management for the government's breast cancer screening hotline is also dependent on a "fiddle" of symptoms.
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Workers have reportedly raised concerns that they could be wrong in dealing with women's cases of the shortage
The hotline was established on Wednesday after the health professor Jeremy Hunt showed that 450,000 women aged 68-71 had not been invited to their final routine screening.
An independent review has been launched in the computer failure, which was discovered in January, but dates back to 2009 and can mean that hundreds of women have had their lives short.
More than 10,000 calls have already been made to the hotline, run by the outsourcing company Serco.
The company said that call managers had taken information using information from Public Health England (PHE) and that the women would be contacted later by healthcare professionals.
But a former employee is quoted in the guardian saying, "I was ashamed to know what had happened to these women, take these conversations when I'm not medical educated, have no counseling background and are not able to help them."
Another said that she feared lack of knowledge from those who make conversations would give more mistakes.