Please be sure you're of age. If you're under 18 you can't technically post here.
Otherwise, how come you can't buy from your local vape shop?
And to answer your question, NO. It is not recommended to use different or off-brand chargers to charge your ecig. It is recommended to only use the charger it came with. You can find ego chargers on the Internet fairly cheap. But if you try to use any other charging cable and things go wrong, you can't blame the device but instead have to own up to user error.
You sure you're over 18?