Samsung Voucher ****

I have bought a Heat pump dryer from Samsung with a R3000 voucher,i received delivery on the 17th of November 2020,I have gone through the process of applying for the voucher,its been a week since and no feedback from Samsung,have called them several time with all their agents promising to call me back and no one has fulfilled their promises,all i was told is that there was an error with serial i supp**** them and that it is a system error,It is black Friday week and i would like to use the voucher to buy a television from the Samsung store.But with the level of service that i have received from Samsung South Africa I would take my money elsewhere,i regret buying the dryer from them and would rather invest my money in another brand.I feel that the voucher deal advertised from Samsung is false advertising and Misleading because they don't state when they intend on fulfilling their part of the deal