i am in the same predicament.... somewhat, although i haven't been waiting as long as you have, I've only been waiting a little more than a week. But i've never been in a transaction where it took more than a few days to ship a package out. Even for myself, i ship packages out immediately upon payment. It's not that hard to get to the post office, and if you have to, have it shipped fedex or purolator, they will come pick it up from you and even drop off the envelope for you to ship it in.
At any time i can't ship a package immediately, i won't accept the actual EMT or PayPal payment until I'm sure it's going out within 24 hours from when i click the ACCEPT button. That way the buyer still has a chance to cancel the transaction or payment if they feel it's taking too long.
So if someone is going to accept my payment, you had better believe i'm going to expect the package shipped out within the next 24 hours.
And the other thing that ticks me off: Just cause you're on ASC and you don't read your PM's cause you know that i'm asking "where's my stuff?!" doesn't cut it either.\
I understand people are busy, but if you're going to sell something on ASC you had better take resposibility and try your hardest to get that product out when it's purchased. The post office is open from 9am to 9pm, during the week and open on the weekends.
Well, that's my rant. I guess you'd like some advice though...
I agree with Lisa. If you have tried all means to contact the seller within your power, including countless emails, PMs and even a phone call if you can get a number, than i'd say post up the name and the details of the transaction, and leave negative feedback for the seller.
Most of the time when you do that, the seller realizes how much shit they've gotten themselves into and is quick to rectify the situation.
If it's the money you're worried about, you can contact Paypal, if you were so lucky to pay through them, and if you paid via EMT, then you can talk to your bank about bank fraud and see if you can get your money back that way. Plus the bank will go after them for you.
EMT has a really strict policy when it comes to bank fraud over the internet and using EMT. And, well, Paypal is somewhat shitty on timing, will still resolve the situation. In your case if you were reporting it to paypal, you'd say you made a payment but the seller didn't provide you with a tracking number and is not responding to your messages.
hope it works out for you, hopefully i'm not making the same post as you in the next couple weeks.