Very Poor Service

I am trying to cancel my NEDBANK Homeloan/Bond because I am selling the property. I did call last week. The service agent told me that their legal person will call me within 3 days (working). It is a week later - I AM STILL WAITING. I am on the phone with Nedbank Homeloans right now! Four different service agents and 12 minutes later I am still waiting to be assisted. BTW - a voice note does tell you that their agents are working from home. 14 minutes on, service agent no 5 has taken my ID & Homeloan details. WE are back to the music they play over the call. TWENTY MINUTES have now passed. Remember this is the second time I am calling to give this instruction. 26 minutes have now passed since I phoned. I cannot wait longer. NEDBANK - I would like to cancel bond ***701 - please call me