Long-Term Trader, Beware of Their Inactivity Fees

I haven't really been active these days, so I haven't checked my account. But I did I was really surprised to find out that Oanda has wiped out almost all of my funds. When I asked them what happened they said it was the 'inactivity fees'. Now, normally I wouldn't be too mad if it's was indeed my fault. But the reason why I am 'not active' is because I was trading long term, I was investing a lot of time in it. They should have a better understanding of what they mean by being inactive. A lot of people hold their positions for a long time, not everyone is a day trader.