A talaq is not a gibberish word of mouth. It is a procedure described in detail in quran.
One talaq can only complete after a stipulated period of iddat is observed. Which can be between months to 9 months long. A talaq is not complete without it, period. It is clearly written in holy quran
I have explained it dozens of time in detail here.
http://www.paklinks.com/gs/religion-and-scripture/288959-talak-ho-chuki-ho-n-pata-n-chule.html
go and read the procedure or consult quran.