My thank you poinst balance.

I have had my thank you card with Edgars for a long time now.<br> After having a good balance of over a hundred and ten rand build up in the last 6 months, all of the sudden I got my slip today saying I only have eighty Rand on. I tried calling every number customer services provided me with but the respond was that no one can help me. <br> I know for a fact that I did not use the money. <br> first I would like to know how someone else can take money off of my card without possessing it physically. <br> Secondly I would like to know what Edgars is going to do about this incident, because at first I thought I was saving with Edgars and now I am getting ****** by them.