I find the best response when they give a correct readback and then tack a confirm on the end is to ignore it and move onto the next task, because as far as I'm concerned the conversation is finished as soon as the readback is made correctly. Some come back again to confirm and I will politely advise them that since their readback was not corrected by me, that it then must have been correct and therefore does not require a further confirmation by me. That usually ends the conversation and allows me to move on to other pressing issues. Thanks for the explanation though.
There doesn't seem to be any Indian pilots on here though unfortunately though so I am guessing this forum isn't going to get the message across, so I will have to keep
until I can get through to some of them on the air. Ah well.