Indian Railways — e-ticketing

Address:

722102

I have booked a ticket at 16.18 hrs. From my irctc account [protected]@yahoo.com having pnr no [protected] selecting options that book, only if 2 lower births are allotted because there are two female of age 58 and 75 (Patient) are traveler. After making the payment i become puzzled seeing that 2 middle berths and 2 upper berths has allotted to us.
It is not possible to travel by ub or mb for a patient and knowing that i have to cancel the above ticket, once more i have booked the ticket at 16.27 hrs. Having pnr no [protected] with the same option book, only if 2 lower births are allotted. After making the payment i have seen that two upper berths and 2 side upper berths is allotted to us.
I want to know why irctc provides the ticket after giving the option of lower birth. I have to book once more ticket to make the journey after cancelling both tickets as mentioned above and obviously irctc will deduct the cancellation charges as per rule but am i responsible for that?
Since it is the fault of irctc, they have to provide two lower berths in one ticket and have to give full refund on other ticket without any deduction of cancellation charges. Irctc is simply cheating to the passengers.