I purchased some valve extenders via BikeExchange ...

I purchased some valve extenders via BikeExchange from one of their sellers Rudy Projects on 17 April. Ten days later on 27 April I finally received an email saying they had shipped, which included a tracking link for Australia Post. Only the tracking link said it hadn't been picked up yet. The email said to wait another ten business days before contacting them about non-delivery. So I waited until 11 May (two weeks since they apparently shipped) - still no delivery, tracking said it still hadn't been picked up. I emailed both BikeExchange and Rudy Projects. No answer. I waited until 15 May and then emailed both companies again. No answer. I waited until 17 May and then tried calling Rudy Projects...I was on hold for a while and then dumped into a message box. So I called BikeExchange - it said I had either called outside their business hours or they were busy and then it hung up on me (this was 3:30 on a Thursday afternoon).

It has now been a month since I ordered from them. I still have not received my goods. Tracking says they've never shipped. Neither company will answer their phones or multiple emails.