Switzerland has its embassy in US, UK, Australia as well as India.
United States embassy address:
The address of this embassy is
2900 Cathedral Avenue N.W., 20008-3499, Washington DC, District of Columbia, USA.
The phone numbers of this embassy are +1-202-3872564 and +1-202-7457900. Other than using the phone numbers you can also email them your questions and concerns.
The email address is firstname.lastname@example.org.
If you are staying in the United Kingdom then get the address of Switzerland embassy is
16-18 Montagu Place, London W1H 2BQ. The phone numbers of this embassy is +44 (0)20 7616 6000.
You can contact with the embassy any day except Saturday, Sunday and holidays.
The address of the Switzerland embassy in Australia is
7 Melbourne Avenue, 2603 Forrest Canberra, Australia.
The phone number of this embassy is +61-2-6162-8400. You can also contact the embassy with the help of an email.
The address of Swiss embassy is Nyaya Marg PO Box 392 110021 Chanakyapuri New Delhi India.
The phone number of this embassy is +91-11-2687-8372.