No feedback on promised credit

I need urgent assistance with my MTN account, I was promised a credit of R1000 on my bill , and it has still not been allocated to my account. I have references and emails from consultants promising me that the credit has been approved, below are the emails I received

04 June 2021 10:21 AM Good day Elia, Thank you for your emailing Customer Care. Pease note a per reference number *** the query has been escalated to billing for the credit. Kind Regards, Wiseman Zulu MTN SA Reference Number: ***

13/05/2021 09:39 AM Good day,

Your credit of R1000 has been approved and it was sent through to the billing team to help resolve, refer number is ***

Warm regards, Terry Morake *** | mtn.co.za