(Photo: Twitter)

The trouble with producing a wildly successful viral video is that everything you do afterwards is going to pale in comparison--and now the folks at Dollar Shave Club appear to be learning this the hard way.

The Santa Monica-based company sends you "fucking great" razors for a premium of $1-9/month. In startup parlance: It's like Birchbox, but for razors! The company's hilarious video went viral in March, and to date it's netted almost 5 million views. But not everyone is happy with Dollar Shave Club's customer service, including one of New York's most celebrated tech founders.

"Hey @dollarshaveclub, I signed up Day One (in March!) & still haven't gotten anything? Is this a real service or just a hoax/meme?" tweeted Foursquare cofounder Dennis Crowley earlier today. Snap!

"I had to email them a bunch of times to finally get my blades months after I signed up.@DollarShaveCLub ‪#terrible‬ cust exp," replied a user named Mike Calvey.

A quick search for "Dollar Shave Club" on Twitter unearths a few disgruntled users eager for their shaving products, but those tweets are mostly eclipsed by hype surrounding the viral promo video.

Former TechCrunch editor Erick Schonfeld has a different theory as to where Mr. Crowley's blades may have gone off to: "I just started getting mine a few weeks ago. you've got earn your way into the club. Many apply, few are chosen :)."

We've reached out to Dollar Shave Club to ask if they've had any manufacturing or shipping troubles that could delay orders. We'll update when we hear back.

UPDATE:

A rep for Dollar Shave Club responded: "DSC sent Dennis his blades this am. No manufacturing or shipping problems, just a few orders here and there that slipped through the cracks back in March at the big relaunch."