I have replied to this issue in detail on an earlier occasion, and the answer to that question may be seen at the following link: http://tilakmarg.com/answers/is-it-an-offence-to-have-two-voter-ids-for-election-in-india/.
In your case, you have mentioned that you had already surrendered your voter ID and made an application to the concerned authority in Ahmedabad and obtained receipt for surrender of your voter ID. You have also mentioned that you enrolled again as a voter in Haryana only on the basis of this receipt for cancellation of your previous voter registration. In this situation, it is not your fault if the authorities concerned did not delete your name as a voter in Ahmedabad. In my opinion, it cannot be an offence. Nonetheless, to be on the safer side, you may write to the concerned authorities in Ahmedabad again, reminding them to delete your name as a voter, by enclosing therewith details of the receipt given to you earlier (and, also enclosing copy of receipt, if available).
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