Hello
First time poster, long time lurker here 
I have just restarted a new game and noticed my badass rank is over 12k! this makes the game way too easy and I thought this was a glitch until I questioned my son and he admitted he hacked it with a game alteration program. I am unable to reset back to zero which is what I want to do now.
Is there anything I can do or am I stuck with being badass with all characters forever
Any reply would be appreciated
Ta
You can turn the BAR perks on and off - check the menu options at the bottom of your BAR tab in your inventory. (Ha! BAR tab! 
). Apart from that no, there’s nothing you can really do about it because the file that tracks your BAR stats ALSO contains all your heads and skins and the contents of your stash.
12k isn’t actually that bad though. Mine in BL2 is up to 150k just through regular play over multiple characters. Distributed evenly that gives a 20% buff to all stats. There are worse problems to have!
You don’t say what level your characters are, but in UVHM you might be glad of the extra help. Also remember that even when you gain more levels, you don’t have to assign the points if you don’t want to. In TPS I’ll regularly go for quite a while before remembering to check, and then I may have up to 10 ranks to distribute.