Double charged

Sanral is double charging me, I get two invoices, one as a prepaid user another as a nonregistered user, for the same transaction. Today I got an invoice saying I owe excess of 400 and ghe period stated there I already had an etag and it was upto date. I have a quei ever since gave up on which they could not sort out, I have accepted that and now they start a new one. So I have to pay two accounts one as non registered another as a prepaid user. Now I see why people dont want to pay, we who are paying seems to be targeted as easy targets for money making schemes now.