Standard bank business banking

I have two bonds through standard bank which are in my business name. The interest rate is extremely high and they cannot adjust it unlike the other banks.

My only option is to try and pay any additional funds into the bonds and over time bring my Installment lower due to volatility in business.

I called them twice and after sitting for almost an hour to get through to someone and going to various verifications.

I am told that I cannot be assisted as I need a business banker to help me.

My business does not bank with standard banks how does a client deal with a finance facility if there is no call Centre to deal with.

Needless to say that all the business bank numbers on the internet which are listed on standard banks websites are either not available or no longer exist