Mobile phones and landline services choked; ATM and banking services paralysed.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/situation-chennai-begins-ease-rain-stops-water-levels-recede-rivers
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/asian-age-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/floods
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rainfall
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chennai-t
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/monsoons
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/flood-relief
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/natural-disasters