Misleading Advertising

I Have always been happy with my Nespresso coffee machines which I have purchased in the past. My recent purchase has left a bitter taste as I feel the advertising is misleading on all levels. I purchased a Nespresso Innissia from Takealot and it clearly states that a free R500 coffee voucher will be included in purchase upon registration of the machine at the Nespresso outlet. I collected my new machine from Takealot and immediately went to the Nespresso Canal Walk branch to register my machine and redeem my R500 voucher. After choosing 5 sleeves of coffee capsules, I was asked to pay in an amount which should have been R50 as the sleeves are approximately R110 each. I was debited R300! When I queried this I was informed that The discount was only R250 and the R500 voucher discount is a new promotion and they unfortunately have not updated the terms and conditions! I was told I had to purchase 10 sleeves to get the R500 discount! I am now out of pocket by R300 and as a 73 year old pensioner, this is a large amount. This is totally misleading and I am not a happy customer.