How to trace missing or delayed emails?

[dnk]

We are interested in hiring an experienced investigator familiar with email routing in India, to investigate under what circumstances emails belonging to private citizens can be diverted. We have proof that our emails were routed through Digicomp India, Bangalore some time ago, and even today, email delivery is greatly delayed (proof of delay available), causing great financial losses. We are interested in finding out who is responsible and how to stop this interception and also initiate legal actions to get compensation for the financial losses. Would also like to know if Google India employees, contractors or business associates are directly or indirectly involved or encouraging this cybercrime. Is anyone else facing a similar problem?