Very bad service

Very very bad service
I am order a dress, at first myntra delivered a wrong product, after that when I am replace request , the delivery executive toll me that product code not match you have to complain, . After that I am call customer service and complain about that, at 1st they tell me that within 16th sep your issue resolved, but within 16th it can not again when I am contact it they tell me upto 48hr, after 48hr they ask me to send product image I am send it again they tell 48hr, after 48hr I am again contact them but they tell upto 24hr, after that 24hr allready passed but did not response me anything, whit is this I can’t understand it, very very bad service ,