You will need to contact customer support to have the line temporarily suspended.
A few things to note:
The link provided above by @NaliniR for all the different methods to contact customer service is correct.
The $10 fee only applies to transactions that can be done on select transactions available on Fido MyAccount self-serve. for a list of all the administrative charges see here.
A temporary suspension can only be done by a Fido representative so you will not be charged the $10 fee, feel free to contact them through any of the available methods listed in the link provided above.
Hello, again @smartstore,
This is a community forum while it is moderated by Fido employees it is intended for users to help each other. Since what you need is account related and you are not willing to reach out to customer service I don't see how Fido can help you.