Bad customer service

I logged a query on the 29th of February 2024 regarding a voucher that i purchased on my banking app. The voucher number dont reflect on my app. The agent who assisted me advised me that it will take 24 to 48 hours to resolve. I called Discovery on the 04. 03.24 the agent again advised me that theres still 23hours left on my query. Today i called again because its pass the 23hours Sisipho advised me that another 11 hours was added to my query. I dont think this is fair towards me. Why must i wait so long for something that i paid already. Today ive been put on hold so long for investigations. No feedback at all