Unacceptable Treatment by a Manager At Decathlon

I went to return the products that I bought but did not use and did not fit my children because they were not suitable for my child's size. However, a person named M*** who was said to be the store manager turned the products over and over, messed with my Decathlon account, did something, and delayed me for 40 minutes. Then unfortunately we cannot receive the products, also you will no longer be served in any Decathlon store, you will be contacted, I was sent away from the store by asking for a contact number. I realized the incident later that although I came for my order numbered tr3101959768 (online) for a return, the personnel picked up my phone, intervened in my order numbered 2-2940 (tepe natuluis AVM) and started talking nonsense such as you bought two of these canoes, why are you returning one of them. I went crazy in the store, I raised hell, I shouted and called out of anger. This personnel does whatever he wants. I have a 60-day return right, I have the freedom to buy as much of the product I want. The product I bought online with a credit card, later on, since my friends gave me gift Decathlon cards for my birthday, I went and bought the same product from the Natuluis store. I also wanted to return the one I bought online with a credit card. That's the point. After all, my credit card will be refunded in cash. Since I used the gift cards, my friends will have received their gifts. That's all. But the person called M*** started talking as if Decathlon was his father's store by saying, "You have misused the Decathlon member program, we have suspended your account, your account has been closed, you cannot return the products anymore." If there is misuse, it will be detected anyway, since I can still order, there must be no problem. I don't understand what he meant by misuse anyway. I wanted to return the products in my order numbered Tr3157160398 due to size incompatibility, but he didn't accept them either. I had to return the products in my hand. Since it is easier to return it from the store and it would be costly to send it back by cargo for Decathlon, I am thinking of your company and going to deliver it by hand, but manager M*** treats me like a fraudster and a liar. Humanity is dead. I recommend that you provide your staff with a little more proper training, or not hire just anyone, or assign qualified,literate people to suitable positions.If you care about your brand prestige and want to protect your customer satisfaction policy