Need some help and info

I WANT TO OPEN A SMALL TELECOMUNICATION STALL BUT I DONT KNOW HOW TO GET VENDOR AND SUPPLIER PREPAID AND ALL MODEL OF HANDPHONE.
ANYONE KNOW PLEASE HELP ME

for reload, you might need to go all the telco branch and ask them. if memory card supplier, pm me. HP no idea. for direct reload service, let me find the link and let you know