Have not been able to use the sim card for 7 month

please note that I received a phone contract from AG mobile in April 2015, I requested a sim swap in July 2015 - paid the fees applicable on the 09/07/2015. received the new Sim card on the 02/11/2015 - the sim is not activated on a net work. and today I receive a message indicating my account has been handed over for R7177.00 arrears, I have checked my bank statement and low and behold the debit order goes off like clock work every month and some months twice? I am extremely frustrated and alarmed at the competence of this company, it would appear that everything from customer service to accounts is a ***** up!!! absolutely disgusted with the entire set up!!!