Unpleasant Service at Samsung head office

Had the Most unpleasant experience and service from Samsung customer call centre, I have bought a Samsung Note 20 and meant to receive a R1000 voucher which I have tried to redeem since August 2020 and till date have not received the contents.

I have spoken to numerous people at the Samsung call centre and they have advised that the voucher was authorized for delivery to me on the 18th October 2020, when calling to confirm. Who is the deliver company or way bill number they advised they unable to give out that information and they will contact me in 24 hours, I have waited 2 weeks and no call, I have called yesterday the 17th March and the agent advised he will call me back before close of business and still no call, I have called today to speak to a team leader, she has answered but guess what the telephone lines are faint and she advised she will call me back.

Please can someone from Samsung Head office please rectify my issue, I have a ref number - 2993NV9GN.

I have always Loved the brand Samsung, however this service is unacceptable by a well renowned brand

Thank you