Incorrectly billing

If I could rate you half a star I would. For the most week I and my mom have been trying to sort out your billing. We have 4 lines on contract and never have I been so frustrated. I was told that when a contract expires or ends you automatically extend it?! What nonsense is that? Without making the member aware, where is this stipulated on the contract. Secondly one headset is being being charged to even after the contract ended, what does that mean? Im paying even more than the value of the device and interest cause apparently the account was in arrears how when I was able to upgrade a month ago on one of the line?

Calling the billing department is a nightmare to say the least walk in is also useless cause they don't know much in regards to bullying issues apperently. I've been places in hold and after hours line drops with no one bothering to call back. Can someone PLEASE CALL .