Intec is an asshole

I signed up for a course in December 2014 and paid in full. I sent through proof of payment. Then I received emails stating I owed the full amount. I sent through my info yet again. Now it is April 2015 and again I receive emails saying I owe the full amount. Why? Because Intec has 2 student numbers for me which is lovely considering I have sent through my first assignment. I have done 2 courses through them before and never had an issue. Since DEcember I have had none stop issues which takes at least 5 people and 8 weeks to solve! Clearly times have changed and it's a useless company. DO NOT STUDY THROUGH THEM!!!