[Resolved]  Rio Technology — I had pay 6500 still they are asking me money

I had pay 6500 and i got my noc rio cmpny they sent me noc that company has no objection in future then too they are senting me mail for penalty when i was paying that money agent told me that you dont have to pay any more i call them several times to confirm and it is clearly saying in noc that my agreement is terminated after 3 days they again sent me mail to pay cancellation charge and when i call that number they are not attending the fone