Useless pre-order and upgrade service

Tried to pre-order the Galaxy S22 via an upgrade but get nowhere. Some screens suggest it is because i am a business/prepaid customer even though i am not. Then another screen claims it is my credit profile yet i can get the Galaxy Fold 3 over the same duration at 4 times the price so that clearly can't be the problem. Tried chatting to the guys in store and can't pre-order there - they'll only phone when it's in stock. The chat guys on Facebook are also no help - Claim the credit story is the issue so they can't help! Might as well port my number to MTN!!