Should I use a job reference that may not remember me?

Hi,

During 2007 Christmas time, I was employed as a casual nightfill assistant at a department store. I later found out that it was on-call casual rather than having a rostered schedule.

However, I only got called upon for one shift and was never called for work ever again. I remember calling them asking why I haven't been getting work, and their explanation was that they simply have not been busy.

Then 6 months later I get a letter from them saying that, according to their records, I haven't been working for a while and that if I wanted to work again, all I had to do was call them. I showed up in person and put down my availability, but then I never got a call from work.

I then recieved another letter from them saying that I haven't worked despite them calling me (which was total BS and I could tell it was a template letter), and that they will terminate my employment by a certain date. Well I was at a funeral interstate at the time and so my employment was terminated, but I didn't really care as they weren't calling me for work anyway.

So on my resume, I have put down that I have worked for them for 6 months but I think I need them as a second work reference now as I just finished university and now looking for a job. I already have one work reference where I was working at a temp job for 3 months, my most recent employment.

The thing is, it will look suspicious if I don't put down the company I supposedly was employed for 6 months but yet put down a reference for a temp job I worked at for 3 months...understand what I mean?

Should I go in person and ask them for a reference even if nobody would remember me as I only worked one shift? Or should I not bother?