Hello dear community, I have the following problem. I had noticed in the spring of last year that I have a 1-2cm large rust spot on my VW Polo back left. As a result I went to the “workshop of my trust” and had it sanded off and covered by a pen (color white) which cost about 200 euros. Now I had to find out unfortunately that the rust comes back. Now my questions: Is it normal that the rust comes back when it closes off or is it my fault that I didn’t have it painted over, but only had it worked through by a cover pen? Has the workshop possibly not fixed the damage correctly? I can’t have this rust stain repaired now every year? If so, does the workshop have to stick to it/repair it? Have asked on the phone and they would look at it again and make me a “good price”. h, because my gut tells me that there has not been properly worked there. Can someone enlighten me? Unfortunately, I am absolutely layman in this area. Thank you!