Boat — No action regarding order cancellation

I ordered a boat airdropes 381 Blue color on 1 September 20201 but they were unable to dispatch it within a week and showing that it'll deliver it after a day so i tried to cancel it but there wasn't any option for it on boat official app, so i called on their customer care service which they provided and cancelled it but still haven't cancelled it and now not picking up the call and delivering my product on 17 September having order it 748922