Checkout Changing Cart Quantities For Some Users

[danrimer]

Hello

 

I've got an odd problem. Sometimes, for no apparent reason, when a random customer tries to buy a number of things from my website the checkout passes the quantities incorrectly to the payment module. This means the customer pays the wrong price and subsequently receives an email saying there's a problem (order total doesn't match the amount paid).

 

For example, a customer bought 3 of one item and went to the checkout. She paid for them, but only paid for 1 and also paid the corresponding shipping rate for just 1 item. The order was stored on PS as 3 items and she received an email saying there's a problem (order total doesn't match the amount paid).

 

Another customer bought 5 products, 1 of which was qty:6. He only paid for 1 of each of the 5 products. The order was stored on PS as 5 products with one of the line having qty:6, as it should have been... - he received an email saying there's a problem (order total doesn't match the amount paid).

 

 

Is this something anyone has seen? If so, i'm guessing it's a theme issue... but how/why?

 

Does anyone have any tips for troubleshooting this?

 

I have put some logging in place by editing the credit card provider's module and dumping the contents of the basket and timestamp to a file, so I can see it is happening to some orders only. Try as I might, I cannot get it to happen myself!

 

At least one customer is using an Apple Mac (he said it was latest version of osX and latest version of Safari).

 

I would like to be able to add the browser and computer type to the logging, but as yet haven't figured out how!

 

 

Thanks in advance

 

 

Dan