Pgi Chandigarh — negligence by doctors

My father was suffering from cancer in food pipe and it was detected at earlier stage (1st stage) in the month of july but bcoz of negligency of doctors, just in 5 months now he is on 4th stage, not even the single doctor guided us properly from the day1, everytime their statement was different at diff. Days, they took plenty of time just for discussing the case with their senior doctor and everytime they were ignoring the case of cancer by telling us a excuse that this is not the priority case for us we have other cases also, by their excuses they have taken 6 months to just plan the plantation of stent in food pipe, which was already rejected by these doctors only 3 months before from now. They were giving us hope of planning the surgery for completely solution for this problem. But just a day before surgery they told us that now this is the case of 4th stage we cannot go for surgery, i didn't understand what they were waiting from last 6 months just for it would convert to final stage only that would the critical case for them, so now huge success for them, they have successfully achieved this.