People can remove from card

I like this plugin but there is no point in having it if people can remove things from card. I thought this plugin was going to be about building a “product”, not choosing multiple products on 1 page.

The problem now is that if someone builds a PC and goes to card and removes either components or the service charge, we wont be able to handle his order because it misses a component or the service charge.

What is the fix for this?