Standard BAnk - Bad Service

I opened a business account with Standard Bank and at first i struggled to login to Standard Bank App and my business was still being charged monthly fees which was resolved. Now I am still being charged a monthly fee but when clients try to pay money into my account, they receive a POP but money returns back into their account. I have tried on numerous occasions to phone Standard Bank to get this resolved but i hold on until the phone line cuts off. I have now had it, it's like no one actually works there. i am not sure how to run my business I am thinking of closing my account and move to a different Bank.