Bad customer service

On the 7th November I went to Nandos Vincent to buy food for my family. I was assisted by Thimna who was friendly and professional. I bought 3 1/4 chicken and 1 hot pot.The flavors for chicken were 2 lemon and herb and one was mild. I left the.store when I got home after dishing for the family.one quarter chicken was tasteless no sauce as per my.request which I couldn't eat I only ate chips as it was after 9pm. Upon my frustration I then called the branch Manager Mrs Dunjwa who is 150kms away from East london as she is on leave , who then called the store to help me.Thandokazi who was the manager on duty called me just to apologize and advised me.to bring the chicken to the store the following day for a replacement. That alone violated my right .I have to suffer for their mistake and no courtesy about me who is going to bed hungry whereas I drove to the store to buy? It was very odd and unfair to be treated like that after their mistake yet I.must suffer.what frustrates me I work for Mr D which I serviced them several times when they forgot an item on customers order.Why my case was different? Are we being classified as customers? Middle class is treated differently from a company order? Email was sent to.their customer service no call from them.only the store apologizing I want to know why there is no plan in place to deal with such incidents and why I have to pay for returning their mistake? Cas_485270-P4Y0Z CR:***