Communing a non-member

My pastor served Communion to a non-member. We discussed it privately and he said it was a 'one time slip' and he would rectify the situation. He communed that same person again. I have requested we talk privately again. I am distressed by this situation; not sure about the next steps if the conversation goes the way of having this practice continue.

You are approaching this in a biblical way: speaking directly to the person responsible for the actions.

If the pastor’s actions are wrong and he is not ministering to someone in extraordinary and exceptional circumstances that are unknown to you and me, continue speaking with your pastor. If you reach an impasse, your next course of action would be inviting your congregation’s board of elders (or its chairman) to join the conversation.

God guide you and bless your congregation with peace and unity in the Spirit (Ephesians 4:3).