Ministry Of Finance Govt. Of India — post office - tds deducted but not reflecting in my form 26as

Address:

Lucknow, Uttar Pradesh, 226001

I am retired from up govt services and have 2 senior citizen saving schemes in post office lucknow - up

Tds was deducted for f. Y. 2017-18 but not reflecting in my form-26as.

I have sent many letters/mails to department of post/cpmg office but nothing has happened till now.
My submission is that it should be made mandatory for the tax deductor to furnish the tds details to income tax deptt so that it starts reflecting in form 26as
Why should a genuine tax payer should be made run from pillar to post for the adjustment of tax he paid honestly?

Why the deductor is still not held responsible for the tds deducted.

Kindly help in this matter