In the majority of countries SIM cards are attached to your identity document nowadays, so you can restore your original telephone number at any office of your mobile operator. DO NOT open a second account, if you have already created and verified one. Nevertheless, if there is no way to restore your old number, we will replace your old number with a new one, so you will still be able to restore access to your funds. To do that, you need to contact our customer support team by opening the chat window at the bottom right corner or write an email at support@mercuryo.io.