I bought an ez-b about 4-5 months back and only used it three to four times

the thing is that i used it for a robot and so i used up about 7-8 ports (6 of them were for servos)

i realized that i got connection failures for that because i was only using 5 double A batteries

so then again tried it with a 6 volt battery and then a nine volt battery, but i still got connection failure

at first, the nine volt battery gave me a little juice and then gave up on me about 10 seconds later; which resulted in me loosing a trophy in a competition

after that, i never really used it, i now tried it again with a nine volt battery and 5 AA battery to use it on a distance sensor but am still loosing connection

i know it's not my bluetooth dongle because it was brand new and very prominent

is this a common problem, how can i fix this, is it too late to report this problem?

i know it's probably to late to return/trade but i did only use it 3-4 times (which resulted in failure) and i don't want to feel like i spent the cash for nothing