Vitality premium debited twice.

Good Day, My name is BNG Manamela, ID ***. I would to inquire about the vitality premium that was debited twice, from my salary with the medical, and bank account with the life cover. I called the call center and spoke to Anele, and he told me that he can't see my premium. The system only shows the total amount received by discovery from the employer. I was surprised because even if the total amount has been received, each member has an identification number or membership number. After I called again I was taken from pillar to post with no assistance. I would like to request a refund since I was debited twice.