Never received and invoice

Every month I receive an email from [Email Removed] for an invoice that I am suppose to receive but every month I have to call Telkom Mobile's call centre because there is no attachment on the email. And every time I call it seems that no one can understand what it means when there is no invoice attached to the email. Whenever I call to resolve the situation, the issue always has to be escalated and I am told they will manually email me an invoice which I never receive. On one occasion after a couple of weeks of logging the query, I received a call to say that I need to contact my email service provider if my email is not working - I didn't even query my email not working so where did they get that from?<br> Please can someone assist with this issue? Again, I am receiving an email from [Email Removed] but no invoice is attached to this email.