Very poor customer service

I’ve been dealing with the same issue for 4 months now. Every time I speak to a consultant, they give me a different story. I’m sick and tired of this. One department tells me that my account is up to date then the finance department can’t find my payment then I’m told to settle the outstanding amount but my plan is still inactive. It’s ridiculous. I want to speak to a superior who can settle this issue once and for all.