I have recently filled a talaq form in and have written down that i give my life 3 talaq. My sisters have told my wife but i havent. Is the talaq confirmed or not?.

Praise
be to Allah.

Firstly: 

Talaaq (divorce)
may be done in writing, and counts as such if it is accompanied by the
intervention to issue a talaaq. If you do not have the intention of divorce
now, and you only wrote it down and are waiting for a suitable time to issue
the talaaq, then no talaaq has taken place. 

If you did indeed
have the intention of divorce at the time of writing, but you were waiting
for a suitable time to inform your wife of that, and not a suitable time for
issuing the talaaq, then the talaaq has taken place. 

See the answer to
question no. 72291 

Secondly: 

The threefold
talaaq counts as one according to the correct scholarly opinion, whether it
was done in writing or verbally. See the answer to question no.
96194

And Allah knows
best.