Am i getting screwed over with this wage?!?

• free pre paid debit cards
• best paid vpn
• domain seller
• manage purchase orders

I have worked at this place for 18 months now and have proved myself over and over. I manage our social networking website and i manage 2 OLDER people with sales etc. The thing is i get a wage of £5.39. I am getting so fed up of this as i am the third longest serving member of staff and have more responsibility than the 3 part timers. (i am full time doing 32 hours a week). I am 20 years old.


Does this seem right?

Am i getting screwed over with this wage?!?