False Advertising Telkom

I upgraded my contract and ordered a Oppo A40 which came with buds and a R1000 accessories voucher. I then received an email from Telkom after delivery stating that I had not activated my Prime Video subscription. I did that. I then called them after two weeks because I thought I would receive an email with the voucher. The agent I spoke to on 20/05/2025 advised that the sales person did not action the voucher and that I could not receive same anymore because I had taken delivery of the phone. The reason I took the bundle was because it came with buds and the R1000.00 accessory voucher because I have an Oppo Reno13 which does not have buds and this would help me use the voucher for same. It is not my fault that the agent did not action the voucher. Telkom is not treating me fairly as a customer. I wonder how many people this has happened to because how was I to know not to take the phone if the voucher was not there? The agent did not even tell me how this voucher would be sent, via courier, email or sms?