Disgusted and frustrated

I am at my wits with this company. They cancel my vitality status after the fact, where an arrangement is in place to settle an arrear amount which we agreed to. Then I call them and send email to explain that fact and again they apologize and ask that I send PoP. I make the payment on 22 September 2023 as per the details confirmed by them on email, and I sent the PoP on the same day. To date, my vitality status is still not reinstated. What is wrong with Discovery? Why must I be the one running around to ask you to do your job. Clearly your systems are failing you because someone is failing to manage and allocate payments accordingly. People need to be fired...this is not on! This is an inconvenience and frustrating.