Maybe your phone company shut down your network because you didn't pay your bill. You didn't refresh it in time after you paid. I suggest you call the communications company and ask them to refresh the back office. There are three scenarios.
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Broadband line problems, if it is the operator's line fault, it is useless to charge the phone fee.
The first thing to exclude is that you have not paid enough phone bills, and the phone is still in arrearage.
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The second thing you need to check is that the power supply to your home broadband is working.
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The third point is to see if the router is working properly. You can disconnect the power in each plug of the router and try it again.
Then call the official customer service and ask him to restart it for you in the background
Because after the recharge, you need to restart the network to be used