Indian Railways — non announcement of delay in trains running late while travelling in trains

I have travelled to katpadi jn. On 03/02/2018 by bhagmati express from mysuru jn with family. Of three by train no.12578, in 3rd ac coach, berth nos.41, 44, &45. After reaching jolarpet jn. By 12.30. P. M. The speed of the train came down drastically to meagre10 kms for about 2 1/2 hrs. There was none to explain the reasons for the delay and there was no announcements. They could have used coach sound speakers for the reason and ease the tension of the fellow passengers who have to take some important business and etc. Etc., the train reached katpadi jn after the delay of 2 1/2 hrs.