Pathetic treatment by manager

Good day, On Sunday i visited the branch to purchase some items, I had my husband and 2 kids with me. The store was extremely busy and the queue very long, my 9month old baby was hungry and i needed to feed her so i purchased a Purity Butternut & Peas Vegetable Puree 110ml. So i told my husband to wait n the queue while i pay n feed her in the car. so i did just that (slip no: ********** 1) but when i opened the purity it was just watery so i knew i wasn't right i went back in store to change the item. A manager by the name of Godfrey Shai approached me with the item and another so he could teach me about purity saying its a "Juice, it is suppose to be like that (i bought the items many times before and its not like that), he also said that i walked around in the store that's why its melted (which is not true). he embarrassed me in front of other customers and staff by opening both the bottles and to his surprise i was right but he didnt seem to understand and continued to go on about purity. All i wanted was an exchange, that what i told him cause my baby was hungry, but he continued. I was made a fool for an item that costed R9.95. At the end of his drama i left the store and did not exchange or refund me money. view camera's on till one around 1:10pm coz my husband was paying (slip no : ********** 0). I think this was unnecessary it actually felt like a ****** attack because if you look at the footage a group of staff approached the till when he came over to me. We spend 1000's of rands at Makro and treatment like this is not needed. we just want to be treated fairly and with respect.