What they want is a "post-paid" number because it is tied to national identity number (SSN/SIN). At the same time, the telcos lose all your account info every few years. And by doing so, your precious "never share" identity info is meaningless because everyone has it.  There needs to be real enforcement and penalties for losing your info that you can't change. Like very punitive to the point the companies no longer want your data. 

Since this will never happen, I am down the path of just not sharing data. I don't do business with companies that demand this info for service. Prepaid should be the default, I'll decide to extend credit for a month or not. At worst, the company goes bankrupt and I lose a month's money sent to the company. 

Post-paid and anti-fraud is a scam. I worked in this industry and it's all snake oil. No matter how much companies spend on this crap, their fraud rates don't change. KYC is a failed joke. KYC is about control, not stopping fraud or crime.