Incorrect order received

I ordered online this morning at 8 using the pnp asap app. The order came around 10 but this was not my order it belonged to someone else. I contacted the customer center, firstly I had to purchase airtime as the emails was useless they don't get back to you and then on the call I get put on hold which was another inconvenience. I was told that my order would be resent from the store. It's four hours later I contacted the customer care again who then told me no response was left from the store as yet. So pnp is prepared to take off my money from my account immediately for an order I did not receive. I was unable to do breakfast as my milk was part of my order and now I'm unable to do lunch as my fresh chicken was also part of my order. I'm left with yogurts and sugar that I did not order. This is very frustrating and a huge inconvenience to me. Pnp online is suppose to be convenient shopping but it makes me think twice ordering through the app agaon