Home loan department not willing to review our interest rate which was fixed 4 years ago

I`m unhappy with the service received from FNB home loans. 4 years ago we fixed our home loan`s interest rate and unfortunately my husband got retrenched earlier this month. We then approached FNB homeloans to ask if they can lift the fixed interest so our rating can go back to prime due to our current financial situation not forgetting the impact that Covid 19 has left us in. My husband spoke to Paballo Pali at the home loan department and she was not willing to hear anything that we were saying. She insisted that the fix rate could not be lifted until the maturity date of April 2022. Under normal circumstances, I would not have asked for this to be reviewed however can`t the bank take into consideration that I have been servicing my debt and have never defaulted. All my business is through you guys. I should think as a long standing customer of yours, you would consider my request or are you saying I should move my business elsewhere they would look at my current situation and take all facts into consideration.

Trust that the above is in order

Many thanx in advance. From JL Mamaregane nee Morris cell: ***