Tds deposited with wrong section no.

Pay TDS under 194I.

And Whatever TDS you have paid under 194C, you can settle it against your next payment under 194C. 

please suggets what is the procedure to rectify the mistake in TDS challan

Immediately approach the bank where you have deposited (as 7 days have not elasped-I understand)

Immediately approach the bank where you have deposited the tax in a wriiten document to rectify the mistake with in 7days