Discovery has poor customer service

My discovery app has not been syncing exercises with my Huawei health app. I contacted the call Centre for help with this issue. I was referred to the discovery website, to upload screenshots of my exercises. I did as request and even received reference numbers for my queries as well as a promise for a response within 48 business hours. It's been over two weeks, and I still do not have a response. I then contacted the call Centre, the agent put me on hold for over 25 minutes, over and above going through the machine. The call was ended due to my airtime running out. I spent over R50 of my own airtime to follow up on a query discovery should have resolved, and my query is not even resolved. Discovery does not even have the courtesy to call me back. This is very disappointing.