I work as an article in a chartered accountant firm. when I joined firm use to DTDC courier but there was always complain from our client that the document is not received even after 5-6 days but once they made a hat trick 20 days passed but the document was not sent that to in same state and same city.it was an important document sent for signature and that day was the last day of return filling.
Sir told as to trace the document it was still in their branch office after so many calls and request they deliver it and from that point of time sir decided to change the courier company