Sky com data solutions - Salary not given

Hai mam/sir I am a middle class person seeking for extra job and a person named Sriram called about part time job. It is writing job and I completed it on time and submitted he asked for **** rs as refundable charge and he said that my salary will be credited with in ** hours I paid and another day he called me and asked for rs **** for currency exchange then he said your amount will credit within ** mins but still now I didn't receive any amount., Later he uninstalled whatsapp and I can't reach his mobile