accounts details lost

em client automatically imported my 4 accounts from thunderbird when I installed it. now after few days an update is given by them and they reinstalled it with loss of my previous all accounts. a very big disaster for me from them. is it possible to recover data? very disappointing and cheating with customer. 

Hello Deepak,
was there any error during the update?
If you had your data in version 6, it can be still saved.
Contact me at [email protected] with a link to this forum topic.

Regards,
Olivia