Automated Upgrades and Downgrades doesnt work properly?

[seboraid]

Hi !

 

I dont understand how an upgrade in my WHMCS was performed.

 

One of my clients buyed a hosting plan on Oct 1, 2010 for 30 USD annually. The due date was set to Sept 30, 2011.

 

My client paid twice so I add them a credit from 30 USD.

 

Today Aug 18, 2011 my client upgrades his hosting plan to an 70 USD annualy.

 

In the documentation it says that the amount ot pay is calculated this way :

 

Old Package

Price per day * Number of days until next due date = Amount credited

 

New Package

Price per day * Number of days until next due date = Amount debited

 

Amount debited - Amount credited = Total payable today

 

The system says that the amount to pay is : 29.51 USD ????

 

I think it should be :

 

USD 30 / 365 days = 0.08 USD daily (old package)

 

Days left = 45 days

 

0.08 USD * 45 d = 3.60 USD (credited)

 

USD 70 / 365 days = 0.19 USD daily (new package)

 

0.19 USD * 45 d = 8.55 USD (must pay)

 

 

So the client has to pay 8.55 USD - 3.60 USD = 4.95 USD

 

 

Thats not all. The due date changed to Sep 3, 2012 !!

 

The Invoice from 29.51 USD was debited from the clients credits and now he is upgraded and paid nothing, and has 1 year more of service.??

[WHMCS John]

The Next Due Date is never changed by the upgrade process, so a member of staff must be changing things which is causing your confusion.

[seboraid]

The staff is just me, and i havent changed the due date. I noticed that the client upgraded the plan twice.

 

The first time it generated the invoice with the wrong amount. The second time it doenst generate an invoice because the amount was set to zero.

 

Can you explain me how was this amount calculated? (29.51 USD )