It is difficult to contract Internet searvice for people who dont speak Japanese.But unfortunatly, many of Japanese company dont have enough support for those people.
Here I introduce the best Internet searvice company which has English-speaker support.
English web site
They have English web site so you can get to know the ditail of searvices in English.
And of course,you can contact and get support by English-speaker support.
This is how to get English web site.
 Softbank collabo (click this link)
 Click this button to visit Softbank Internet service web site.
 Click Logo to jump to Softbank group official web site.
 This is Softbank group official web site. You can change language into English.Clich the button at upper right.
 You can look around SoftBank searvice in English! You will also be able to contact in English here.