How can't we help you

My partner and I are looking to purchase a property and we submitted everything requested through a very professional and helpful home loan specialist named Melissa, after a few days we contacted their call centre to query how far the process was to be informed the application was denied. The main reasoning was that she was not employed long enough. The thing is she was a full time student for 4 years and only finished last year and immediately began at her employee this year. The school she is employed at informed her that it was a permanent position and that due to the lengthy process at the Department of Education would only be able to complete this process by the end of June 2015 meaning that as of January up until June she will be on a contractual basis. We even sent them a letter from the school confirming the above. I feel this is discriminating she chose to study further to provide herself with a better future year now she is not seen as a member of the financially sound society just yet. We went to a different bank who we don't even bank with and the process was not only faster but more efficient. How is it that our own bank that we have been using for years.