No response from journal after submission
It's February, so the holiday season is long over, and no reasonable journal ought to have lost its entire staff to vacation for so long.  Moreover, most journals have an automated system that will acknowledge your paper and tell you about its current status.  If this journal hasn't got the infrastructure to even acknowledge your submission in over a month, then I would it a rather dubious prospect for publication.  

Note, however, that there is another possibility that you should rule out before withdrawing, and that is whether either your emails to the journal or their emails to you are getting lost in a spam filter.  This is particularly likely if you are from the developing world, to which blacklists are often applied quite carelessly.