Poor service

I went to purchace a cellphone on contract, seems like the lady is not knowadge because turns out everything i asked her she gave me wrong answers. For intance i asked if the phone uses odinary simcard or micro sim, she said my old sim will be fine.which is not true. And she also failed to inform me that i have to pay the connection fee + the first intstallment . I had to gind out a lot of things onmy own. I regret buying that phone.