First off:65 is in no way too low. In fact for a bock, if you used lager yeast, you should have pitched/fermented in the low 50s, not mid 60s.
2nd: You say you raised to 70 which is actually way too warm for any Bock lager, and even if you are using ale yeast this is still probably too warm. You will likely get a lot of fermentation off flavors.
3rd: Are you in a bucket? If so pop the lid and look to see if you have krausen. If you are looking for air lock bubbles you may miss seeing them if the lid is leaking.
Finally if you actually truly aren't having any fermentation you may have used yeast that was not fresh or viable. What yeast did you use?