Lack or not returning your customer calls

I have a matter with their transactional ***** department when you call to speak to them you get told that there is no way to talk to them when you you forever leave your number and contact details and never ever call the call back from them or anybody from Standard bank, this is just pathetic honestly. You go the Verulam branch and they ask you phone from their phone and the consultants keep you holding on the phone for over 40 minutes only to cut the call on you after numerously asking you to hold while they check for or try to get someone to call you back from that so called transactional ***** department.