Y. S. Enterprises, Buddha Colony , Patna - Modular kitchen not delivered

Dear Sir,
I have ordered my modular kitchen to Mr. Alok of Y.S.Enterprises, Buddha Colony, Patna. He came on *th of August **** with Mr. Niraj at my residence in Darbhanga. We had agreed on the deal for the amount of ****** (Two Lakh) for modular kitchen. Which he have to install after ** days of deal. on the day first he has taken ***** (Fifty Thousand INR) as advance. But still I am waiting for him. Now neither he nor Niraj is picking my phone. I called on his another no on which he has not saved my no. he picked and again he told me give some time.
Now i am afraid .
Please help me, and solve my problem
I am giving you the no. of Alok +************