Absa Home Loans Department, penalising the withdrawal from Flexi Reserve

In 2012 I obtained a home loan from ABSA. Since the day of procurement, the interest rate has been fluctuating (up and down) and although I was withdrawing money from my Flexi Reserve, I never noticed the change in the monthly instalment, except when the rate changed. However, I have noticed lately that my monthly instalment has kept increasing in spite of the interest rate being decreased. The bank’s explanation for the increase in the monthly instalment is that I withdrew money from my flexi portion. In the previous years I had occasionally withdrawn extra money that I kept putting in my home loan account and there were no penalties for this. Now, though, ABSA penalises me for withdrawing my own reserve money. They tried to explain this to me, but the explanation was very vague, which made me feel extremely uncomfortable. This “penalty” for withdrawing money from my extra funds on the bond account is something new and unusual, and I have neither been notified of it nor forewarned that this would be happening. Now I am in a ‘quick sand’ situation since in order to add an extra amount because of the increase of the instalment, I will have to withdraw money from my flexi. The more I withdraw, the higher the instalment is. I had kept this extra money for the “rainy day”. Everything was just fine until, roughly, the days when the interest rate started going down again. The most frustrating is the way ABSA explains this issue: they said nothing substantial as to why the monthly instalment is affected if I withdraw from my flexi reserve. Had I known this was the case, I would have put my extra money into another account and I would not have been penalised for withdrawing the extra money I have on my bond account. Perhaps I am wrong, but I currently feel like I am being ****** and that there is nothing I can do about it. To top it all, the bank employee I contacted promised to email me the original Loan Agreement in which, allegedly, I could see “that clause”, but I have not received anything yet.