Plain yoghurt versus strawberry yoghurt

i was not a happy customer. Went to a shop in kraaifontein @ 21:40 and bought a Darling Plain yoghurt as use it to marinate my meat using plain yoghurt. When i got home ,to my shock that the content differ the description of the item. The content was strawberry yoghurt, i went back to return the item only to find the shop closed. It was just over 22:00. My recipe needed the plain yoghurt. Meaning the result of the recipe is now not going to the same. As it was suppose to be marinated over night. I took pics of the product. But cannot upload the pics. Im very disappointed .