Doesn't make sense.....

I'm a premium subscriber and a debit order customer. Not once I've fallen back with my subscription since 2011 to date. However I still have the old model decoder and feel its absolute waste of money because I cannot even box office, catch up or anything else because my decoder is still the old version. I would like to own a explora, especially the fixed package special of 24 months for eight hundred and something to nine hundrend but according to the credit check I do not qualify.... but I don't understand why would I not qualify because not once have I diverted from paying multichoice month to month without problems. but instead an account that has nothing to do with Mutlichoice has an effect on me qualifying for the package. If that is the case then I feel multichoice should make it visible on their adverti*****t that a credit check determines your ability to get the fixed pricing special so that we do not bother ourselves from the disappointment from Multichoice even though we are paying customers.