Indian Railways — sleeper class journey with family nowadays

Address:

522007

Hi,
Sleeper class journey is very uncomfortable with family because of tc. Sleeper journey can easly do without reseveration and this is causing trouble to pre planned reserved ticket public.

1. Why without reservation, tc is allowing public even though there is no space, where as ac it is not the case.
Pnr:[protected], train:12703, doj:31-07-17, sl, gnt-sc, dep:04:10,
Balaji bitra+1, s1 19, s1 21,
Fare:830, sc:0.0+pg+ins
2. Above are my journey details, my unit contains 13 people where as allowed per unit is 8.

The price i paid for this journey, i can surely get comfortable ac private journey... Really disappointed.