Interest rates

Hi Peter

i would like to complain about capitec customer care i phoned them regarding an issue with interest rates variations. one one i received a certain amount of money on my account and the next month i received 500 rand less on the same fixed term investment. i phoned the client care after speaking and waiting for them 30 minutes the guy explains what the reason is which also did not make any sense. after explaining he all of a sudden speaks as if he cant hear me and then hangs up the phone. After a whole 30 minutes of conversation how come he cant hear me this is really fishy. Capitec can not give me a reason as to why the interest has droped over one month period by a whole R500 i feel so disappointed in the service received from this bank !!!!