U/s138 of ni act

Yes the complaint can be amended..

If wrong cheque No. is written on the Statutory Legal Notice, then such a notice is nonest.  

Since the time for re-issuance of the Notice would have expired, you have virtually lost your remedy u/s. 138 N.I. Act.

At best, you can now file a Summary Suit under Order 37 CPC for recovery of the money.

i agree with r.ramchandran bcoz u had to give the notice with in 30 days no question amendment bcoz it will change the whole case so ----i think u had lost that case

u can go for civil suit  limitation 3 yerrs