R2000 voucher for S23 series not recieved

I recently bought (pre-ordered) a galaxy S23 series phone from a Samsung store in Durban, on pre-order i was told that I will qualify for a trade in, a tab s6 lite and a R2000 Samsung online voucher. Upon collection of the phone, the store suddenly told me that the R2000 voucher was for people who registered for the unpacked event (this was a change from the original pre-order deal), I did not mind this as I did register and have the email to prove it, The R10 000 trade in and tab deal went through with little difficulty.

I have phoned on numerous occasions to your call centre during the first week and was told that a list of phones who watched the un-packed event will get the voucher.

It has been almost 3 weeks now and there is no sign of this voucher, i have tried phoning your promotions department this week and it only rings, i have phoned your call centre with a promise of escalation but it goes nowhere, all you do is put me on hold (samsung does not even have the decency to call you back, you think airtime is free).

I would like the issue to be resolved and be given my R2000 voucher which I qualified for N.B there is no line on the terms and conditions upon registeration which said that you must register for or watch the unpacked event to qualify, in my opinion you are misleading the customers into thinking this, there was no explicit statement regarding that you must watch the galaxy unpacked event on the confirmation email upon registering

If I do not recieve feedback from Samsung South Africa, I will gladly take my complaint to the CPA