I didn't get the job as they promised me

I applied for a debt collector callcentre agent position at the company called my life direct it is situated in midrand. I saw the AD on internet saying they require people to work as debt collector agents and sales agent. I applied for a debt collection position and I was called for interview on the 10th of december 2014 I went to the interview and I was I called by the lady named Olivia on the 5th of January 2015 she told me that the interview was successful and that the training will start on the 26th of Jan 2015. On the 26th I went and I was told that the position is not available and I was forced to do sales. I went to Olivia and told her that I applied for debt collection not sales, she said I should wait for the person who interviewed us which it was Vivian. And unfortunately Vivian was nowhere to be found. I am very disappointed because I had to resign at my work place because I thought I have found work and only ended up being forced to work for the position I didn't apply for. I refused that position and they said the position will be available in the beginning of March, they said they will call towards the end of February to let us know when we are going to start. Until