Well, it’s Thursday, so if you sent the ticket(s?) on Tuesday and the response time is 48 hours currently, that might still be within the response window and you might get a reply soon.
I always get the (immediate) automatic confirmation mail when I need to send a ticket, though.
If you are sure you didn’t get any confirmation mail(s), however, maybe there’s some bug and your ticket(s) didn’t get sent. In that case, you could try with a direct mail to email@example.com
(Generally, it’s not a good idea to send several tickets for the same issue (can’t tell from what you said if you only sent one or several tickets), as that would create several cases and case numbers and things will get confusing, the system also might consider it as spam.)
Hope you’ll get it solved soon, either way.