Unhappy customer with FNB

Hello Peter. I have switch from Nedbank to FNB, including my home bond, with the promise that I would receive 60 000 e bucks. Because of switching from one bank to another my first installment went off my old Nedbank account. This was rectified and there after my installments went off my new FNB account. FNB however, does not want to pay out my promised e bucks because of this. For me, this is unfair play. My private banker tried to rectify the mis understanding to no avail. I am not unhappy with FNB as a bank, but with regards to my promised e bucks it leaves a sour taste in my mouth!