i am disgusted by the service that i continuous keep getting from FNB

i reversed a debit order that was older then 40days i was told it would take 40 calendar day,and now 49 days has passed and i don't have feedback and i dont have my money back,the 1st time i followed up on this which was two weeks back ,a call center agent hung up on me ,what must i do now,it a shame because black people are still being treating like *******,and i have witness this in several occasions the service that black people give to white people is absolutely different then the service they give to another black person because they assume hence his black he will understand which is absolutely nonsensical ,i need someone with authority to contact me and stop wasting my damn time and energy you are horrible FNB you are a division of hell,if i must change the bank let me know because i know it won't hurt your business coz i am just a drop in the ocean and i will gladly do so i can see i won't get my money back,this 49 days you guys never even attempted to do anything about it i have to spend my own airtime bothering you