Thats weird that you receive TXFee, so might be they are not scammers, just someone broke my account
but in my situation - that was not possible, I didn't have wallet on Saturday. Pass was different from other pools, pin - not simple
Not exactly sure why you saw those transactions. I just went digging through my account and everything checks out so far. I've been mining with them for some time now(pretty much from the start) and have no issues on payouts.
To me, it seems that someone gained unauthorized access to your account. I suggest changing your pass/pin and also running a deep extensive virus scan on your machine that you log in with. It could potentially just be some keylogger running on your machine...
If you do have a keylogger on your machine, then no matter how random your password is or pin, someone will be able to gain access.