Dell Pay

Just recently bought a new laptop and decided to use Dell Pay. This turned out to be a horrible decision as I've now spent the last couple of days calling Dell and Comenity (the bank used for Dell Pay) to try and get a duplicate transaction for the same laptop resolved. Every time I contact Dell, they say it's Comenity's problem and every time I contact Comenity, they say it's Dell's problem. It's insane that I've had to jump through this many hoops to use Dell Pay and still haven't been able to resolve the issue. Also, from Dell's perspective why does it matter if Comentiy is at fault? You're advertising their service on your website so heavily that it's literally called Dell Pay. If the partner company you guys are using is so greedy or incompetent that they try to charge a customer twice for the same purchase, then it should be Dell's responsibility to fix the issue, not the customer.