Reliance Communications — Receiving Threatening Calls

Sir, My name is Pratyay Ghosh Dastidar, with Mobile no. [protected].With all due respect, after being with Reliance Communication for such a long time, now I am receiving threatening calls from the following numbers: [protected], [protected] and[protected]. a female person is calling from that number, representing herself an advocate and demanding a due amount of Rs. 1500 for a number which I terminated around 3 and half years ago after usage of 1 month, when suddenly the tariff plan was changed without my consent. At that very moment I went to the nearest Reliance Web World and applied for the termination of the mobile no.and cleared the amount. But suddenly after 3 & half years they are calling and threatening me to pay the amount and if not paid, they are going to drag me to the court.After being with reliance with such a long time such an action of harassment is highly un-anticipated. I don't know if I am going to continue to be with reliance any longer. Thanking You