Shipstation Customer Service DOES NOT RESPOND

I agree. I have had a horrible experience with Shipstation and their partner/subsidiary GlobalPost. I tried the free 30-day trial in March of this year, and here's a timeline of what happened with my first shipment:
March 18: I joined for a 30-day free trial, and made a shipment of 4 packages to a customer in Germany, which was supposed to go via USPS/GlobalPost, at essentially the same price as the USPS charges for their International Priority service.  The charges were about $395 total, for the four boxes.

March 19 to April 30:  Two boxes were delivered within a reasonable time frame, one box was a couple of weeks late, and the fourth box was nowhere to be found. When I contacted Shipstation, they referred me to a GlobalPost site, which claimed that the box was in transit, and gave a DHL Germany tracking number. But the DHL site indicated that the tracking number was invalid. During this time, the responses I got from GlobalPost customer service were erroneous and/or useless. Due to the box being lost for such a long time, my irate customer in Germany requested that I send a duplicate shipment via FedEx, which I did.

May 3: Suddenly, the DHL tracking number began working, indicating that DHL was given the box on May 3, at their Los Angeles location. Evidently, the lost box was just sitting in the GlobalPost facility in Los Angeles for over 6 weeks! I of course complained to Shipstation/GlobalPost, but have not received any communication back from them for the past five days.

If anybody from Shipstation reads this, please reply. The GlobalPost ticket numbers are 6655637 and 6714057. Neither complaint tickets have been answered in any satisfactory way.  Aside from having to pay for an expensive (FedEx) shipping charges due to GlobalPost's negligence, my customer is rightfully unhappy for the long delay caused by Shipstation's partner. Aside from shipping costs, I now am at a loss for how to get back my $552.50 (declared customs value) worth of merchandise. 

I guess if I don't receive a reply, my only remedy will be to file a complaint with the BBB and with small claims court, which I prefer not to do?

I would suggest calling the help number (512)975-3001, they've always picked up for me and that is the fastest way to get answers! 

A year later and it's still absolute garbage. If ya'll are looking into different shipping companies, RUN, far far away from Shipstation. 

It has also been my experience that it is IMPOSSIBLE to actually get help from ShipStation, and if you do get through to a person, they don't know how to fix the problem and won't follow up. It seems that their approach is to hope that you simply forget about it. 

A month later, from the previous post, customer service is still absolute garbage. I had two aduited FedEx boxes with impossible dimensions (sent photo proof as requested in the support case) for the products I sell. This also occurred a whole month after the packages were sent.

I was told at the start of all of this that I could not use my ShipStation accounts due to this dispute (aka, don't add funds). It's been over 21 days since this dispute started, and still, there is no clarity on what has happened. I sometimes get responses the same day (even though it's way after hours for me, other times it's been 4-7 days, with one stating they were out of the office. The rep has changed their story, saying the dispute was tried once, then twice—no proof or explanation of what happened or why the dispute was denied. No way to communicate with someone else, either.

Why would ShipStation care? They get their money monthly, regardless. I am not sure what I am even paying for. I guess if nothing happens to any package, this service is fine, but as soon as you have an issue, you can say goodbye to any hope of help or clarity, and, of course, kiss even more money goodbye. Why would they care if you get charged an exorbitant fee? It's not their money. Maybe they will slightly care if they lose customers, but I highly doubt it.