Vfs does not want to refund my R1350

They dnt want to refund my R1350 that i paid into their account on the 30th March 2017. They keep on saying they cant trace the payment, i gave them all the proof that they requested and the account number i paid that money into, it was through the so called secure portal on their website so i just fail to understand why they cant trace it. Its now 7months and still they cant refund my money, i really dnt know why they cant refund my money. Their service is quiet unacceptable and poor. I really wonder why the Department of Home affairs trusted Vfs to do this job on their behalf because clearly they are worse .