Verb conjugation of "ergänzen" in German

I forgot to mention: you can forward this site which explains a little about language learning. I tried to call you on your mobile but it is not working. Please call me on this number: number undisclosed.
I was a little confused because I recognized the voice and I had booked at Luisa's guest house. She explained me that she was sharing the phone with her neighbor and her neighbor was not honest.
I had imagined my first dinner to be a little different, but I was already here and wanted to make the best out of it. So i ate there and return to my hostel at around ten o'clock at night.