Disconnected my service

So I get message stating my service has been suspended. I call the call centre and they advise me my price lock has come to a end great I only signed up in Feb 2017. Then the agent promises I will get a call back as she needs to escalate it. Guess what no call back, I call again the next day and I'm advised again that I have no active account and request to speak to a manager and I'm told all the managers are busy and I was promised again that a manger would call back before 5pm. I shouldn't get upset because they never said which year before 5pm the manager would make time and call back there client which pays there salaries. Bottom line all I want is a letter confirming everything the call centre said and we can part ways. Worst service I ever received.