Ripping customers off

It’s been 3 days since I wrote to capitec customer care and logged my case on the 16 but no one bothered to call me or rep**** to my emails at all I fixed money for a period of six months and I was promised interest on top of interest if I reinvest my cash but now the money is fluctuating instead of it going up it goes now with a different of 320 and they charged me 250 for fixing my cash mid month of which it was never communicated to me I’m unhappy they ripping me of and I’m sure they been doing it to a lot more people who doesn’t pay proper attention on how is the growth of their money coming along