Fixed interest rate never explained

Good day.

I have app**** for a personal loan at Absa Midrand Boulders on the 10/09/2018. Account number ***. A consultant NEVER EXPLAINED to me about a fixed interest rates,and i knew nothing about it until recently when the interest rate went down, i happy that iam going to pay less on my personal loan however months went by and still paying the same amount as from the beginning of my contract.then the interest rate went down again but nothing change. I phoned a call center last month and they told me that my installment wont change due to payment relief plan that i took for three months (covid19/pandemic) then today i went to the absa branch Northmead square to get clarity and they referred me to call call the call center were i never received a proper explanation nor clarity. I hoping to receive a better explanation inperson at the brach but still no luck. Its unfair that i was never told or explain too regarding interest rate. Please assist it's urgent

Email address: *** Cellphone number:*** Account number:***