Without prejudice to the above opinions, I quote my opinion as follows:
Since this is a case of 'signature differs', the drawee should inform the drawer of cheque by sending him a notice (not necessarily u/s 138) stating that the cheque has been dishonoured for the reason 'signature differs' and ask him to issue a fresh cheque. so that u can re-deposite it and get ur account settled.
Now, if the drawer is not paying attention to ur notice or straightaway neglecting ur notice.....then the way is very clear for u. In such case it will be a very good case of Cheating (u/s 420 IPC). And u can approach police for the same.
But if the drawer is ready to re-issue the cheque, then there shouldn't be any problem.
I always advice people for 'amicable settlement' & preservation of relations. So try to settle the matter as amicably as possible. (in this way, we contribute for minimising litigations).
I hope, the querry is solved.(pls let me know about it).
Regards,
Nitin.