Double charge Gautrain ticket

I bought a month pass Gautrain ticket and got charged for it twice , now Gautrain and ABSA are unable to refund me.

When I first purchased my ticket the attendant charged me on my ABSA creditcard and said the transaction cancelled, with the amount of R2009 was perhaps too high as to why the transaction was not successful.

We proceeded to split the transaction between two of my bank cards. FNB R500 and ABSA R1509

This time it went through.

Later I discovered that my ABSA card was actually charged twice. R1509 and the first R2009 transaction. Now Gautrain are unable to refund me as they say the amounts dont match, but it was split between two cards on the 2nd transaction

Absa reference for this Case is C- ********** 2. Contact me ********** 909