i have two different products in two different categories.
The shipping costs of product A depends on the weight (up to 2kg=4,90€, up to 5kg=6,99€).
The shipping cost of product B is 0,00 Euro.
Everything works fine when i put only one type of product into the basket. When i put one or more of product A and one or more of product B into the basket the customer can choose between the shipping costs for product A and product B. But in this case the customer should have no possibility to choose because he has to take the shipping costs for product A otherwise he could choose 0,00 Euro for this basket.
How can i realize that the shop offers only the highest shipping costs?