Goodday Kranthi Kumar (K K)
The key to the better communication is to Practice communication with your neighbours in English and it has to be the pure english. This takes atleast six months time if your effort to make 3 hours per day in practice lessons.
There are American way of speaking, Australian way of speaking, British accent, neutral accent. Usually in india we use neutral accent for call centers,and to work at BPO. There are four sections to
have a effective communication and they are Listening, Reading, Writing, Speaking. The Listening part is more important as we have to understand their accent in order to reply them. Their difference in pronunication differs from person to person and also the style way of speaking manners. If you are in new delhi,its best to use the British Council and approach them for communication classes. As there will be more trained experts who have traveled to U.K. These persons will be able to train from the neutral accent to the British accent. we should not imitate their accent as do the native speakers may get angry sometimes. Using visal aids, audios are also one of the way to learn a best communication. I have been in Australia for higher education and the way native speakers speak and understand from indias does take time to pick up their accent. With hardwork and practice within 6 months we have understand and pickup their accent much better than the native speakers.
Try listening to IELTS cds for British accent. Learn both the versions General and academic versions in the Listening sections. Try Academic reading that is tough to understand the English vocabulary. Learn more
vocabulary and frequent vocabulary. Watch Movies now, Star Movies,sony pix, you can pick vocabulary everyday.Look for BBC News channels, CNN news for speed understanding their accent as the news readers are always dynamic in reading and also speaking.
Audio visuals does have affect in Brain and with interest it does gets recorded in Brain.
All the Best