Translation of cock-a-doodle-doo in German

I hope you you had a successful week in Dortmund. Because of the bad weather at the last moment I could not get on my flight to Dusseldorf and I have stayed home. I was afraid to fly.
Yes, but I was unable to work on this yesterday, and today will be almost impossible too. Between tomorrow and Sunday you'll have quite a few more entries in the system. I just wanted to know how it is going.
I think it is better to send an e-mail. Unfortunately, I have not received any response from you. I have answered your last letter a month ago. I would like to correct your mistakes.