Money withdrawal denied

I joined play2win casino on the 3rd of January, I deposited £30 and started to play, i did not claim any bonuses or anything of the sort just deposited £30 and started to play. I deposited via my bank account as the payment option was available, I then started to play and decided the site wasn't for me I had won £20 making my account balance £50. the site seemed 'dodgy' to say the least so i decided to have a look around and look at my account and withdrawal possesses, on entering the withdrawal page I became aware I couldn't withdraw the same way i deposited, this unnerved me greatly leading me to believe that it was a site that scammed people rather than having to customer interests at heart. I decided to speak with the live chat representative Angelina, who explained I had to withdraw through neteller even though i hadn't deposited through the neteller. I set up an account and then tried to withdraw, which failed. I contacted Angelina again who then told me I had to deposit a further £30 through neteller to verify my account before i could withdraw. On hearing this, as it was not explained to start with, I was very upset, and said i wanted my money in my bank account. After a phone call with Angelina, who shouted and screamed at me down the phone which is very unprofessional she point blank refused to give me my money. I decided that my only option was to make a further deposit of £30 and then withdraw it instantly. With the extra £30 deposited through neteller my account balance was £80, I clicked to withdraw this and the play2win site said that i had successfully withdrawn £80 and it would credit my neteller account in 2-10days. every day i checked my account thinking it should be in. this was not the case. I didn't understand where my money was. So i logged into play2win again today (27/1/14) to find that my account was firstly in credit, and withdrawals had been stopped on my account. My account balance only read £60...which isn't right as no money was withdrawn and I haven't logged in since the unfortunate day I became a member. I again tried to talked to the live chat assistant which again was the same Angelina who was rude and unhelpful. I explained my situation to her and she said 'come back in 2hours' I asked if the problem would be resolved then and she said 'no i need to speak to my manager come back 2hours' . I then waited 2hours and came back to angelina who said she would put my money into my bank account which previously she had said was impossible. I asked her where my other £20 was and she said 'You asked for a refund so you don't get it because you only get what you deposit not a withdrawal' this is a falsehood and needs to be rectified as soon as possible. they stopped me withdrawing money that belonged to me and now have refused me my winnings which is a horrible and stressful situation to be placed in. I need help because the company refuses to sort this out claiming i didnt ask for a withdrawal which i did. thank you for your time in this matter.