Saharayn Universal Multipurpose Society — Not refund my maturity amount 17250

2017 i fixed an amount of rs. 17250/- the name of sahara agent who fixed my money was manish tiwari belonging the hologram no.[protected]. He said that after some years i. E., in 2019 my amount will be double and i could withdraw it.
But in 2019 he didn't give my double amount, instead he handed over me star two certificate of the same amount i. E., rs.17250/- to add to this.
I think it is a big cheating from the agent and from saharayn ltd. As well.