Poor service and over charging

Service, service,service. This is a telecom service been on the line holding for 49 min re my account. Then they refer me to sales who did not pickup after 20. They let you sign a 24 month contract for the mini ups. They however then continue billing you. Accounts tells me no, they continue billing you thereafter per month until you cancel. The www says there is no more costs associated. Sharks and want to distance myself as far as possible from them.