Shocking service from Discovery Card

I contacted Discovery Card on the 5th July 2019 to cancel my Discovery Card(as I have gotten a much better interest rate at another bank). I was advised that it would take 3 working days. Nobody from Discovery has contacted me and account is still open. This is shocking service. I have had other products from Discovery and the service from the call center has always been shocking. I will definitely think twice before considering using another product from Discovery due to the shocking service from the call center.