how do I submit a help ticket?

I already checked the vendor, not there Where can I buy an Arbiter's Double-bladed Lightsaber

I don't have a bag:(

I am a level 13 Jedi Shadow. It seems I did something wrong. I do not have my double bladed lightsaber. I checked my inventory. I checked the vendor to see if i had sold it. Nothing. What did I do wrong and where can I get another one