Poor Customer service

Cellucity had a promotion in July 2019 whereby you can get 2 Huawei P30 Lites for R499 pm. I app**** and was approved for the deal and on the 5th of August 2019 i went into the store and received my phones. I paid my sim initiation fee of R210 and the consultant adviced me that the porting will be fixed within 2 days after activation. I checked with the consultant everyday because there was a problem with my porting. On the 21st of August 2019 i received a message from the consultant who informed that my application was declined due to an system error. I've already starting using the one phone and now they want me to return both phones because the system is declining my application. I'm very appalled by this manner of customer service and feel that I've been treated unfairly. Yes i understand that credit checks and everything has to be checked but why approve me first, hand me the phones and then several days after decline me? Is that how you do business?