Wrong Woocommerce cart content – caching issue?

Hi guys, i have an online shop using woocommerce, additionally i have installed W3. I have the following Problem and i am wondering wheather it is a Caching issue and if W3 can help me to resolve it: i am receiving orders in my woocommerce order Management backend that include several products the customer acctually DID NOT add to cart himself, e.g. the customer put only one item into cart and ordered it, but in my order Management there are 10 further articles added and shown that the customer definetly did not order and did not see in his cart, otherwise he propably would not have ordered if he suddenly sees items in his cart that he actually does not want. I have 50 orders that are fine and correct, and then one of a sudden there is that one order thats worng, next day the same issue. So my question is if it could be a Caching issue and if so, can some Settings in W3 help me to avaoid it? Your Feedback is highly appreciated, thank you in advance