make a complaint

[Edited: "Solicitation"] I have called customer service for the past three days. My phone was locked after I moved to another company. After calling and complaining they still have my locked even though it was shown and proved that I paid my bill out and the phone. I am going to have to buy a new phone and I want to file a claim since they won't unlock my phone like they said they would. I never been treated so badly by doing the right time. I just want my phone to be unlock or give me the money I paid for the phone. Someone please help.