**Do not sign up with SMARTY.** I opened a main account and three sub-accounts for my kids (10% discount). The service was not good, poor signal etc so I closed the account after three months. I was told by their customer service this meant no more charges. WRONG. They continued to bill and when I contacted them, they refused to "validate" the account so they could look into why they were still billing, because the main account was closed. Their validation process is ridiculous. They could see that the three SIMS were not being used. But they carried on billing. This went on for multiple months and finally I got them blocked by my credit card company. This is a predatory business practice and I strongly recommend no-one sign up with this awful company.