unable to add on or rebuy!!BF PR PLS HELP

not once,several times now in euro 22$rebuy,come add on.unable to add on or rebuy.message says "unable to transfer chips to account"wtf does that mean?have enough funds at the time,today took 20$ when i rebuy just before addon period,but kicked me off saying that above message.so wheres my money BF??last time spent 100$rebuys,commited come addon didnt let me rebuy or addon thats not right.
anybody experience same thing?