Indian Railways — 12515 train - don't prefer this train

We, thomas, ramesh, madhan abiroopan, booked a tatkal ticket from cngr to mas, dated 18th june 2017 pnr number [protected]. We boarded in the allotted s1 compartment. The coach (S1) was very dirty and there was no water inside the toilet. It was also occupied with lot o[censored]nreserved passengers. We asked them to go to general coach as we feel more uncomfortable. But they were not listening to our words. It was very noisy inside the train and some of them smoked inside the train. The stinking smell form the toilet made us extremely unpleasant and uneasy. We also complained to the tte in duty, mr. Santhosh kumar (Tvc division). He told us that he will inform the rpf and clear the unreserved passengers from our coach. We waited till the next station, but no action was taken. So we registered a sms complaint (Ref no[protected] to[protected]. At ernakulam, one rpf police man, mr sathish, came and enquired the about our complaint. We explained the situation to them. And we requested to clear the unreserved passengers from our coach, as we felt that we don't have any safety in traveling in our coach, as it was too crowded like an unreserved coach. He tried to convince us stating that this train is always too crowed to control the unreserved passengers and he added that we have to bear with that. Then with no other options, we hardly decided to drop our journey at coimbatore. And we took a private bus to chennai. It was waste of our time and money. It was really a very very bad experience with lot of tension and stress.