Indian Railways — non-refunded of cancelled e-tickets

Dear sir,
I have booked two e-tickets through irctc website. E-ticket booked on 6.4.2018 bearing pnr no.[protected] (2a) for mas - tna for travel on 3.6.2018 has cancelled on 8.4.2018 for which the refund amount of rs.3255 has not been received so far. Similarly, e-ticket bearing pnr no.[protected] booked for dr - ms for travel on 12.4.2018 has cancelled on 6.4.2018 for which refund of rs.240 has not been received so far,
Kindly look into the matter and see that refund amount of rs.3495 for two
E-tickets cancelled on 8.4.0218 credited into my sbi, west tambaram, chennai, savings bank account no.[protected].