Hi Roy,
I'm so sorry that you're unhappy. Let's see if we can make some amends.
Your first point of contention is with the Custom Design upgrade. Ultimately, if you're unhappy with it, we're more than happy to refund you and remove the product. But let's see if first we can't get you some of the flexibility you're looking for.
In your Custom CSS stylesheet, you can specify any size for the body copy (or heading tags) that you'd like: https://sexdiaryofanoboist.wordpress.com/wp-admin/themes.php?page=editcss
So I don't know what size you'd like to make your body copy, but here's a starter piece of CSS you can try to get you rolling:
.wf-active body {font-size: 25px;}
p {line-height: 28px!important;}You'll want those entire two lines to begin. The first line (.wf-active body {font-size: 25px;}) targets the size of your content font. The p tag below it adjusts the line height for your paragraphs. You can enter those on your Custom CSS page:
https://sexdiaryofanoboist.wordpress.com/wp-admin/themes.php?page=editcss
And then click "preview" and play around with the numbers to get the exact size you're comfortable with!
Of course, like I said, if you're not comfortable with this level of technicality, we're more than happy to refund the product for you. Just let me know.
So, next, it looks like you're having a problem with the new media interface (you are right: this recently underwent an overhaul). Here's the support document for playing a video:
http://en.support.wordpress.com/videos/youtube/
The short version is, you should be able to just take the link and paste it into your post editor - no further action is necessary! If this is exactly what you did, just include here the link to the post or the draft, and I'll be happy to take a closer look.
And finally, you wish it were easier to contact support. At any time you can post here in Staff Answers and request a private support ticket - we usually try to reserve this for support topics that contain sensitive materials, but are happy to address our users who prefer email as well. We have found that having a comprehensive, browsable forum full of user tips/tricks/problems/solutions is really valuable to our users.
I hope that helps clear the air a bit, and I'm happy to address any other issues you may have.
Cheers!