I have a flickr pro account from 6 or so years ago with hundreds of photos on it. I've tried over 10 times over a year to contact their support and get turned over to Tech Support in India that won't even read into your case!
Of course, the original email address I used for my flickr was deleted, so none of the avenues on Yahoo Help (which is where they redirect you) work. Not to mention the password may be reset after all the leaks Yahoo had.
So when I see these people on @FlickrHelp on Twitter (No replies) and Flickr having office parties, it really makes me feel quite disappointed! Yeah sure, real human touch! Former paying customer who just wants to login his account with tons of priceless photos. And they have a thread of like thousands of people who can't get into their accounts [1]
At least the employees are having fun with data compression. Sad I can't talk to an actual human to get access to my account!
[1] https://www.flickr.com/help/forum/en-us/72157668446997150/