Gautrain refuse to fully refund me

On 22 January 2021 I tried reloading my three Gautrain cards at R50.00 each =R150.00 by bank card.These are my only cards that I have and always used ***, *** and ***). The transaction was not a success however my bank account was debit with R150.00. Both the cashier and the supervisor asked me to retry, I retried and same thing happened, Nothing reloaded but I was debited again another R150.00. I was advised that Gautrain will refund me in the next 24 hours otherwise I should lodge a claim. Finally I got the statement from the bank as requested and I loged a query, Reference number B13716. After some weeks I was refunded R150.00 only not R150.00 twice which is R300.00 according to my claim B13716. The Gautrain Team advised me that the other R150.00 was paid to some other card(That card I know nothing about it, I have always had 3 cards,, that is not my card)Despite my efforts of explaining that maybe the cashier/System made a mistake and credited someone else's card with my card after my failed transaction. They dont want to check how long was this stranger card reloaded after my transaction, probably I was even gone by then. I went back to Gautrain Centurion station and I was advised they will look into it. I have also logged calls online. Todate I havent received any feedback from the station, I haven't received the other R150.00. Saturday I received an email from GAutrain team that there is no refund, call closed. I am hurt, for someone unemployed R150.00 is a lot of money to just give it to Gautrain such a big company. They are refusing to refund me.