Upgrade on any qualifying on SA's best .... Get a R500 Takealot voucher

My Wife has been struggling now for a month, after a upgrade she cannot claim her take a lot voucher, She has contacted Samsung, Take a lot and MTN, which no success.

Have returned to store 3 times, Samsung say its MTN, Takealot say its MTN - MTN say its Takealot

Upgrade on any qualifying on SA's best .... Get a R500 Takealot voucher when you sign up or upgrade to a Samsung Galaxy A50 or A80 on