slacking staff now overcharging me while i receive stalker phone calls

Wesbank's consultants fail to communicate with me and then I am charged more! Since signing the initial contract with Wesbank I have asked for them to communicate with me via email. Instead they phone me during working hours - and i stipulated that I have multiple work phones therefore cannot answer phone calls during working hours and requested an email - this was not refused.

Yet, they have failed to phone me at a reasonable time and have now added extra fees to my account - simply because their staff refuse to communicate with me properly.

Also, i was delayed in receiving my updated (still current) insurance policy which is very much still active - but now I am being overcharged!

Wesbank's office staff refuses to put my call through to the correct dept. when I phone in - so how am i to get hold of them in any way, other than via email?

In addition 95% of the phone calls received from wesbank are stalker phone calls where NO ONE speaks. So I answer, and then I am saying Hello hello hello and hello and then the phone call is dropped.

So how is this fair on me?

PLEASE PHONE ME BETWEEN ONE AND TWO PM ON A WORK DAY - I CANNOT ANSWER ON DEMAND