Declined withdrawal due to ''irregular play'' accusations

Hi, my english isn't very good and this is a long story but i hope you can read and maybe help me.

9.12.2016 i made a 20 € deposit and played without any bonus. I won over 6000 € by playing max. 5 € bets and decided to make withdrawal request of 5000 €. I played rest of the money just for fun and i have to admit that bets got too high. But i have to also say, that i didn't win more money and the withdrawal request stayed.

11.12.2016 i was bored and decided to cancel my withdraw, take 100 € of it so i can play, and made withdraw the rest (4900€). I did not win anything and bets stayed less than 30% of the deposit.

12.12.2016 i got an email that my withdrawal was declined due to irregular play and i only got my deposit back to my account.

I did play with too big bets but that was after i have made withdrawal request, and i didn't won more after that.
Account manager said "At no time can you make bets equal to or more than 30% of your deposit amount. That is the casino's rules." But i have read the rules several times and there's nothing about it! Here's a screenshot about that rule.

Please, can you help me? I really think that this is not right :(