feeling so cheated

i had an edgars acc 2 years back but closed it due to the fact that i didnt want the 12 month interest acc and they informed me i couldnt change it to 6 months after the acc has already been opened. i have recently app**** for a 6 month free interest free plan acc and after the acc was opened was informed it it the 12 month interest bearing acc. Im furious about this, apparently its due to the NCR and they have no control of this. My problem is this, why was i given the impression it would be 6 month interest free, and why did they not give me a choice regarding the 12 month plan. no1 called me regaring this, id like to know what causes a client to be placed on the 12 month interest bearing plan as no1 could really explain it to me. im furious after going through all the hassle of opening an acc only to get the 12 moth plan which is the reason i closed my acc in the first place. I'd appreciate if someone can call me regarding the matter.i feel cheated and mislead. why should i have to pay more( with interest bearing plan) when i may manage to pay the balance before 6 months, how is this helping the average south african.