No tickets, flight departs tomorrow!

I purchased a ticket on Jan 16, for a flight departing on Jan 19. I was informed I would receive e-tickets before midnight on the day of the purchase, it's been 2 days and I still haven't received any e-tickets or updates. My booking seems to be still pending and I don't know why. I got no reply from customer service so far. My flight departs tomorrow and I don't know if I have tickets or not. I would like to cancel and book through a different website but I don't want to be charged a penalty fee as the product hasn't been delivered. I really wish I checked Travelstart's reviews before using their website :( DON'T USE THEM!!