I'd guess the $750 was for a Barclays Reward MC? How much did your profile change between when you applied and got that first card, then canceled and received the Pre Approval for the Arrival+ ??? I'd bet your scores, utlization, etc all changed quite a bit. Sometimes, especially with rebuilder cards, a lender may hard set that terms of that card, apr, limit, etc...and you can't doing anything other than improve your scores and apply for a different product later.
