INCORRECT ORDER RECEIVED MR D FOOD

I ordered a peanut butter bliss smoothy and was sent some other type smoothy which I will not drink. At R51 for this drink why should I accept an incorrect flavour. On calling them 5 times and emailing them 4 times they still cannot advise me when I will get the order I requested. The staff that answer the phone are pathetic. They havent received the email, they need the order number, the order will be replaced and then they will speak to their team leader and call me back. It's been over 1 hour since I received this incorrect order and no one will assist me.