Travel : St. Petersburg to Tallinn by bus/coach

[lindamalex]

I would like to travel from St. Petersburg to Tallinn (Estonia) one way during the daytime by bus/coach on Saturday 06 January 2001.
I have been informed that the train runs every alternate day but departing St.Petersburg after 11:00 pm.(23:00), which is completely unsuitable for me.
Can anyone please give me any information about bus/coach lines/ companies that go to Tallinn ( including contact and/or possibly booking office phone numbers and their
e-mail addresses)
Please contact me at lindamalex@hotmail.com
as soon as possible. Thank you. -Alex