Hopeless Service Continues

I ended my work with a company in June 2015 and before that date, I and the board members filled in and signed all forms given to us by Standard bank to hand over to the person taking over from me. I am still receiving calls to notify me that the are incoming funds to that business account. Every time this happens politely tell them not to call me. Today when I strongly told them to stop calling me, the call center lady put the phone down on me. I would avoid any job that involves dealing with Standard Bank, it is just too stressful to deal with them.