Why are we losing all chargeback disputes even with good customer service?

[Pripri]

Well, now we check every customer, we ship only to billing adresses and new customers ( min 3-4 orders) cannot order more than 150$ approx on the store because sometimes they look suspicious, order 3 items to have delivered elsewhere , etc. We have a lot of rules and if anyone tries a chargeback , we call the credit card company and tell them these people are doing fraudulous orders. That works, because IF it were to go through with us, next time, when they need it, they will have trouble. And we warn the customers we will do so. One time we had this and the customer backed out . Really insulting that people try to steal from us. If it were food and starving but our stuff ??