has anyone had the experience of asking iberia to pay them the eu late arrival fee?

i had a flight from nyc to split with a layover/connection in madrid...the first leg of the flight jfk to mad was delayed causing me to miss my connection. iberia booked me on a flight leaving the next day, so i arrived at my final destination almost 24 hours late, therefore, i think i am eligible for the eu flight delay compensation.

i filled out the form on iberias website yester, just wondering how long i should wait before escalating the situation

thanks