TFG's Non-existent New Customer Vetting

TFG have no proper controls when opening accounts for new Customers. Their main method of communicating with Customers (especially when their accounts are overdue is via sms. Yet it is shocking to note that TFG do nothing to verify the cellphone number that the new Customer provides to them when opening their account. As a result, it is possible provide a false cellphone number to TFG. And this is exactly what is happening!! A Customer who provided my cellphone number as their contact number defaulted on their payments at the end of October and since then I have received at least 50 phone calls from Agents of TFG trying to collect the money and at least 15 sms's from TFG themselves! All because TFG allowed this to happen and because they have no other way of contacting the Customer. I have told every caller that they have the wrong number, but still nothing is done about this and I continue to get harassed, a number of times every day! I am sure that the message about this large loophole is getting spread around and that there is now an increasing number of Customers jumping on this bandwagon. But TFG seems absolutely oblivious to this?