Atkins Software and Digital interview questions

Received and finished a telephone interview on 17th October, 2019. It was announced to be an introduction for the next step. The interviewer said that assessment centre will be held on January 2020 and I will receive invitation by then. However, I did not hear about anything from them thereafter. When I wrote email to ask about the AC, the recruitment team just said that my application had been failed. This process has been highly irresponsible.