It honestly depends on the specific provider, you would have to contact them directly in the billing department and ask. Here's a few problems you may run into though:
You may be under contract, and if that's the case then you would be breaching the contract by stopping / pausing it.
You may encounter a termination of service or service re-activation fee when you try to stop or restart the service, they may also request the internet equipment back. This can make what you want to do not worth doing.
