BAD Exprerience

I have sent back my sim card of which I complained in the beginning of the month that I DO NOT Need, but my contract line is still active and I do not know how is that possible while you receive the sim card back. You guys are selfish as I already took another line with you just cancel this line. What is customer service? It is quick for you to open a new line but to cancel you take forever. Click CANCEL on my *** so that everyone's life can be easy. I have 3 contracts already with you guys so is this the type of service I am expecting for the next 2 years of my other lines as well????????? That Tobi thing is not working, this line was activated by them but now they can't assist and reffering me from one department to another.