I don't know why my mobile phone often receives those 1258 numbers. My number was leaked.

I think it may be leaked. You should consider it from many aspects. First, look for reasons from their own operations. You may have accidentally clicked on other websites, and your mobile phone number was read by the website, which led to leaks. Second, friends in your circle leaked it to you. It is possible. Third, you may have opened a link on your mobile phone. So you must pay attention to playing mobile phones in the future.