Poor communication and poor customer service.

I have an insurance with Discovery insure one f the small tv in our bedrooms got damaged due to power surge. I lodged the claim and I mut say the process of lodging the claim with Discovery is very smooth and feedback was provided throughout the process. Sometime last week I received a strange SMS, my week was hectic, and I never paid attention to it, later that day I went to all messages received and there was nothing urgent. Yesterday I called Discovery Inure to enquire about the voucher because when i logged on the APP, I could not get anything under vouchers tab. I was kept on hold for a long time closed to 20-25 minutes as the consultant was trying to identify where was the issue for not getting the voucher, I was running out of airtime I requested that I get a call back in case I get cut off. She called me back and explained that Discovery is no more working with Makro. I felt it was fair to be notified during the claim process and not when I enquire. The consultant advised me to call again today to do the follow up, I refused as I felt Discovery should call me as a customer, changing internal processed and suppliers should not be the Client's problem. This morning at 10h30 I received an SMS from Makro stating the voucher number to collect the TV from Makro. This got me frustrated and having trust issues with Discovery. The time, money and service I am buying, I felt I don't deserve this kind of service. Communication is key more specially for any changes happening internally through change management.