Ola Cabs — Ola cheating to custom

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Ola cheting to customer for last month its happend so many user . They deactivated all coupan for user without say. And if we ask they say stupid answear as per voilance policy you coupan deactivated..and they not say proper answear what voilacence.its a just trick start for promotion and now they cheating.i already complaint it about but no action taken.i say if i do voilance so who give you righ to deactivated my coupan code.my coupan code is avlible in my account for last 2 month.really i disappointed next time i am not use ola its better to use uber or ther cab