A year ago I commissioned an artist, and did it in person, in cash, at a con. Because of this there is little to no evidence of this transaction ever happening. Since then I have had almost zero communication with them, and they have both started and finished numerous other commissions (including others of the same type getting more progress in a week than I had in a year) while having barely sketched mine, while giving me a story about "giving it the proper attention to detail" any time I ask about updates. I feel like I'm getting the runaround here.
My question is, how would I go about recovering my money from this person? Should I wait it out again and hope they finish the product THIS year? Does this warrant an AB report?