Samsung has disappointed me after being loyal for so many years

Samsung did not honour their promise. I pre-ordered the galaxy note 20 ultra via MTN when it qas lodged. I got a confirmation code from MTN that my pre-order was approved and MTN Promised to call further after two weeks to take the application. MTN never contacted me and eventually three weeks later I contacted them and upgraded. I then proceeded to claim the R4000 pre-order voucher from Samsung which was eventually approved after sometime doing. All this happens in September since October i.hsve been calling the call Samsung call centre where I get promisd that the voucher will be promised but nothing happens. The lat month they kept on saying they will now send me the ear buds which are worth the same as thr voucher nothing happened. Everytime I call I get the same questions asked and they say they will escalate it but noting ever happens.

I am tired of calling and saying the same thing to Samsung. It is not helping.