Bad customer service not interested in assisting at all

Registered a bond with standard bank, they offered us a discount when opening an account with them, I have opened an account with them and the interest rate is still the same, tried to phone numerous times to correct the interest rate, the agents keep on transfering to "someone" who can assist and end up being hung up on, no emails have been rep**** on, wonder if I made the right choice going through standard bank with my home loan , receiving this kind of service so early.