Bill for no service

Cancellation reference ***: I cancelled my account on 2 March. My line has been down for 5 weeks during January and February. I work from home and I need a stable connection.My last references are: 51CTZ121114, 28CTK150115, 36CTK070215, 485CTK270215.<br> When cancelling, the agent told me that I will receive a last account and I must dispute it. I received an account on 8 March for the period of March, indicating that I have a credit. I received another account fr the period of April to 8 May. I need clarification on this please. I was at your store at the mall@reds, but they couldn't help me. I tried phoning, but held on for a long time.