Pensioner doesn't qualify for ANY contract

My grandmother has been a customer of Vodacom for years. She upgraded her contract to one they had on special which included a Samsung J5 handset. <br> <br> She was approved for the contract but stock of the phone was only expected in a week. It is now over a month there is still no stock. Furthermore, she received a call today informing her that unfortunately she does not qualify for ANY phone on ANY contract with them.<br> <br> I've never heard of anyone being rejected like this. Even people with bad debt somehow manage to procure a phone contract but somehow a pensioner who receives her monthly pension and has a perfectly good credit score is not worthy of Vodacom's services.