Tax Refund Money Placed on Hold without any reason

My tax return was submitted on November 2nd 2022. I was supposed to receive a refund of 16 000,00 after the assessment. However, SARS selected my account for audit and verification. My refund was finally paid to me on 11 January. When I tried to access the money in my account, I couldn't. I contacted Absa ***** department, who informed me they had been instructed by SARS to not let me use my refund money until further notice, I am under investigation. According to SARS, they didn't give such instructions to ABSA and nothing is recorded in their database against me. There is no clear indication from Absa as to who gave them the instructions. My refund was mostly due to the high school fees I pay for my autistic child, which is really unfair. To make matters worse, no one is able to tell me what is going on. I am being sent back and forth between Absa and SARS.