SUPER bad service

I have been trying since April 2022 to sort out my overcharge. I phone at least once a week and with no help. They keep suspending my account even though i pay the payment plan on time. Until such time they decide to help me. I called yesterday asking for the legal department and no one called. I am so over this . I want to cancel but they say i can't till my query is resolved, but they can't resolve the query. I just want this resolved and legal to call me.