Hello Maryamzahedi_s,
Welcome to the community!
Firstly, you should note the forums are community-driven and not intended as a venue for customer services. We do not have access to customers' accounts nor would we know the details of your situation. Apologies if I do not fully understand your issue.
I do understand you switched from Fido to Bell last month. However, you would be responsible for all charges prior to changing providers. If you moved to Bell last month (ie December), you would still be responsible for any charges before the switch (ie November).
That said, we would not be in any position to address your matter. If you wished to discuss your situation, you would need to contact customer service. In addition, they can also be contacted via Live Chat, Facebook, or Twitter. Those methods can be accessed via the contact page posted above.
Hope this helps 😀
Cheers
