Reserve Bank Of India [RBI] — misleading about the circulars issued

Address: Lucknow, Uttar Pradesh

I went to exchange my 500 and 2000 rupee notes at rbi lucknow but they told me that they cannot do so because of no rules issued about it but when i came outside the bank a person contacted me for rupee conversion i want to know if there is no rule issued so far from where that person outside the bank will change the notes there might be some link of that person inside rbi which will let him change the notes plz let me know if there is any problem in changing such notes plz help