Bad Service!!!!

I am absolutely disgusted and appalled by the service received from the Nedbank in Parktown. I recently opened an account with them last month and struggled first and foremost with just getting my app reconnected. Furthermore on Monday they blocked my card and I there fore cannot access my funds! I have been relentlessly calling them after visiting them twice and they either ignore my calls, or tell me they will call back. No feedback , no nothing from a lady specifically called Lebo! As I am writing this, my matter still hasn't been resolved and when I ask to speak to their manager they actually hang up my calls! This is absolutely unacceptable to say the least! What kind of unprofessionalism is being taught at Nedbank is completely flabbergasting! How am I suppose to carry on with my card being blocked?