There are many ways to contact Google Adwords customer care. You can call them or can contact them by visiting the google community forum.
Google Adwords Toll Free Number: 1800 258 2554 (For Existing Customers)
1800 266 7001 (For New Accounts)
1800 120 4000 (North)
1800 572 8309( google ads specialist)
Google Adwords Customer Care for all India: 1860 266 6622 (9 to 6 pm)
If you need support to set up Google Ads account or any other kind of help you can also contact them by filling a form. Click Here