ANTIROUILLE DURA TECH

Good morning I had my car rustproofed last month. When I went to install my winter tires this week I noticed with my mechanic that more than half of the underneath of my car was not done. I took the car back to duratech yesterday and the technician redid the underneath. When I asked why this happened he told me that perhaps the rain washed it off.....funny. I am wondering if the rest of my car was properly done. I was very surprised and disappointed to see that this would happen at duratech. Regards Tom Lombardi 514-557-6335