Happens often repetitive QSO from hams all around the world. We kindly ask you to check first if your QSO band/mode is listed on clublog.org which we update few times a date before you call us on same band/mode second time.
Having now in log over 13000 QSO approx 400 are dupes. Of course in case you are not sure we made contact and there is no chance to catch us again make another one, alternatively please check club log once updated. Spending time on repetitive calls we could not make contacts to someone else who may need it too.
Thank you a lot for you help & understanding