Waitrose telephone interview?

Hey, can someone help me please? I applied for a job at Waitrose in Marylebone and my application got put on hold. I then applied to one on Old Brompton Road and went to the interview yesterday. However I did apply to a Palmers Green one during the time I was waiting for my interview for Old Brompton Road. I went to the Interview and felt that I did quite well. Today I got an email saying that they would like to discuss my availability with them for the Palmers Green Waitrose over a telephone interview. Can anyone help me please as to what this means.