I recently booked a trip on KLM.com from EWR to DEL via AMS and a return from DEL to EWR via AMS (all KL coded flights). The EWR-AMS and AMS-EWR are operated by Delta, so after calling them I was able to book my discounted (GM) Economy Comfort seats. However, when I go to KLM.com and enter my booking code it does not recognize me as Skyteam Elite + and doesn't give me the discounted Economy Comfort price. I called KLM directly and they said that the seats are free for Skyteam Elite + She assigned me free EC seats on my two KL flights. Now if I log in to DL.com and KLM.com all the correct seats are shown, but I am not convinced about these free KL EC seats. I am willing to pay for the seats, but every time I call KLM they keep saying everything is fine and that seats are for me. How do I make sure I actually get these KL EC seats?