Bad service

Last year I took up a router contract will bluelabel connect, it never work and it was collected in September, till this day it's not back no feedback, nothing and I am expected to pay it every month. I Hage been sending email and everytime I get a different answer. My question is I was sent the courier number and now I am asked if I got confirmation and yet the is an emails that says the device is Being assessed. And now I even lost the sim card cause I can't keep changing sim cards on my phone just to have data