Delivery delay

I contracted Akash Packers and Movers to move all my possessions from Lucknow to Pune. They were scheduled to deliver everything including my car on July 2nd. Only today we received our things. They never took the time to explain the reason for such delay.

Every time I called they promised me next day delivery, so my wife waited for them again and again. I would not recommend their services to anyone. I understand there might be delays due to the weather, traffic, and etc. but I want a proper explanation. I do not agree to pay for someone's negligence.