LG GFlex 2

i app**** for a LG G flex2 online and only after almost a week that i had to send my details through numerous times they eventually received it and about an hour later they approved it for the deal on gflex2 on uchoose flexi 200. then i got an email back to say sorry but you do not qualify for that deal anymore. there is no indication beforehand that they tell you you may only qualify for specific deals. i app**** for the GFLEX2 and that's what i want as vodacom approved it for me. i never skip payments. i have personal loans as well as numerous other cellphone contracts and credit cards and they are always paid in time. so i cant see why they can all of a sudden decide i do not qualify for the contract anymore. it also does not state anything in the T's and C's about changing any application that is approved for a specific deal. this i really don't want to hand over to an ombudsman. please resolve this issue for me. thanks ref no for online purchase is ***9