Useless network provider !

I have a pending credit note query since March 2020, and this is how long it took me to get absolutely nothing done about it yet. After MTN's agent did a ********** on my account, I have been calling them every single day, since no one see the need to keep me posted on my query! A credit note has been placed for my R1100 to be refunded on 24 April, but to date nothing is reflecting on my account. My unbilled invoice still has an amount for the new coming months invoice, after they were supposed to cancel the ********** upgrade and ensure no further amounts is due to me! I have spoken to Phumzile Nyawose who just dropped the damn phone while I was still speaking to her, after I told her it's bull **** that she cannot see my balance on my account, why is she even still working if she can not assist with anything! MTN need to give my refund back into my bank account or they would have to hear from the Ombudsman again! They need to get decent agents cause the useless ones there is not deserving of their salaries, useless is you ask me.