edit and improve please: Dear Mona, 
Thank you for your reply, as I told you before, this issue has created a big problem for me and my family, and considering that it takes time to apply for a new visa from the embassy in Tehran, if possible, if it is possible for you, can you send an email to  the embassy of  Germany in Tehran  imply to speed up the process of issuing my visa and my family , it will be a great help for me and my family, and it is a great favor and you will save us from worry, thank you very much. 
Thank you very much again
Best regards, 
Ahmad