Vouchers is a ****

I received a R100 OneDayOnly voucher from Vodacom using their Vodashake promotion and so did my most of my family members and friends we noticed all of us got the sam code: VOD-100-PBY Yesterday they had a promotion on their Omo capsules and we all ordered. Today they canceled each and every order we placed using the code and said not more than one customer can use the voucher knowing very well they gave the same voucher to all their customers. I feel this is unfair to all of us who used our data time and banking fees to place the orders and it is now being cancelled because of their negligence. I complained on their Facebook page and was called a *****, oh the irony! I will not leave this just here! They are the worst company I’ve ever dealt with! Instead of sorting the issue out with Vodacom who gave us the vouchers they are punishing us as loyal customers I am changing networks as well!!!