Thes procedures to change the ISP can sometimes be long and tedious. These tips should help you see more clearly ...
The contract termination with your current ISP
Your new ISP
You have chose your new provider, but note that, it may take some time for the latter to install your line and send the appropriate router. For some providers, the date of service may be long, very long.
It is also very important to make sure that the area where you are living is eligible for the services provided by the ISP
Take your precautions
Nobody is immune to a problem and an ISP is no longer immune from making mistakes. Keep copies of all correspondence with an ISP, accompany all your shipments with acknowledgment of receipt. Also keep your proof of mailings. In the event of a dispute with your ISP, you can prove your good faith.