On-Dot Couriers & Cargo Ltd. — delivery still not done even after 10 days

Address:

Mumbai City, Maharashtra

i had sent 2 documents through On dot courier service ,Santacruz,Mumbai to Karnataka state,on the 23rd ,of august. Today is the 2 Nd of September and ,,my subject has still not been delivered, On contacting them, they give answers like some illiterate people ,and keep asking me to call them back.Is this way their owner has taught them to service their customers?. They should understand the importance of the Documents one sends through a courier and not the Postal department. I don't think they even have the courtesy,,or the capacity to compensate me with the trouble they have given me after charging for their services.