Purchase of credits and spend for customers billable

Hello,

I am reseller of a web hosting company, I pay monthly 10000 INR amount to that company against which they provide 99xx of credits cutting GST and handling charges upon it. Then I use say 5590 credits to purchase services for my clients and add some amount say 6590 over it and sale. How do I record this in quick books.

currently I am marking these as expenses and billable to certain clients but it is never in round figure, It always keeps balance in that web hosting company's account.

if I create bank account and mark it as transfer tracking balance in hosting company's balance and then expend it for clients ? will that work? which account type should I use? how can I get through and mark accurate transaction?