Unacceptable service

I have ordered a pair of shoes and a belt online on the app on 23/08/2022, the app shows the items were shipped and were suppose to be delivered by 30/08/2022. It is now 16 September - still not delivered. I have followed up numerous times on the Whatsapp and was first told it was delivered. When there on 12/09/2022 turns out the delivery slip that was sent was for the wrong shop. Then while in the store the said it will come this week. When i followed up now again i was told next week. Really!!!!!!!! I have order 2 other times afterwards and those items have been received. The service is really unacceptable and it seems that you now have to wait for a month before receiving items. If don't follow up because the app status doesn't change then nothing will happen. I want to know where my package is and when i will receive it. It' can't take a month for a pair of pumps and a belt.