I'm like 99.99% certain that the only way to get turned into a Werewolf after getting cured through the companions would be through Aela the huntress. So you'll either need to find her or reload a save where she's somewhere you can find her.
That, or you can start a new save and get it that way. This is the way I'd recommend because grinding the achievement you are talking about is much easier to do all at once on a character you don't care about.
All you gotta do is play the 3 or 4 companions quests on a new save (you can start these as soon as you get into Whiterun the first time, and they are all really easy) up until you're turned. Once you have the Lycanthropy power, wait until you aren't tied down to a companions quest anymore, and go outside to the stables of Whiterun. It's best to do this during the day time when the most people will be around btw. Transform and just start eating people. You can then run West toward Markarth, if you stick to those roads and just eat every person you see, you'll have all the perks in the Werewolf Tree in like half an hour. I just ran back and forth between Whiterun and Markarth until it happened, there's only like 12 or 13 or so I think all together. This way, you also don't tarnish your rep in a character you've spent hours and hours on developing.
Hope this helps! Good Luck