UPDATE 9/9/15 12.40pm Emails have begun arriving with customers advising them of GAME's next steps in returning money to customers who were over-charged for Super Mario Maker pre-orders. "On Monday we became aware of an issue with some isolated orders," reads the note from GAME's head of customer services. "This has impacted a number of customers who pre-ordered the Wii U exclusive, Super Mario Maker. We have been working through crediting any pending transactions with our banking partners as a top priority. You should see these appear on your account over the next couple of days as we resolve everything ready for the product release on Friday."

Some customers remain disgruntled that the money may not appear in their accounts for another 48 hours, up to four days after the issue arose, and there's no mention just yet of compensation for those who've incurred fees for going overdrawn due to the multiple charges from their account.

UPDATE 8/9/15 2.55pm GAME has provided Eurogamer with an update regarding the multiple charges - up to £329 - for some customers that had pre-ordered Super Mario Maker.

The chain has said it is working "urgently" with banking partners to resolve the issue. Hopefully this means that customers who have now gone overdrawn will not face any fees.

GAME's statement in full lies below:

"Yesterday we became aware of an issue with some isolated orders. This has impacted a number of customers who pre-ordered the Wii U exclusive, Super Mario Maker. Customers may see, in some cases, duplicated billing for their order, which appears as a pending transaction on their account. "We are working closely with our banking partners to resolve this issue urgently. "If you find you are affected, our customer service team can be contacted on this dedicated hotline number 01256 784400 or email us at customer.services@game.co.uk "Thank you for your patience and we apologise for any inconvenience caused."

UPDATE 8/9/15 10.25am GAME customers who pre-ordered Super Mario Maker have woken this morning to find that their bank accounts have now been charged again multiple times.

Eurogamer readers have shared images of their GAME order history - and up to seven charges for their one order.

Many have now been charged for seven copies of the game - costing £328.93 - when they had only ordered one.

Last night GAME apologised after customers noticed multiple payments had been taken from their accounts.

At the time, GAME's support team said that the issue had been identified and would be resolved today.

But the charges have continued this morning, and some customers have reported going overdrawn.

"The situation has gotten worse since I and several others on the EG forums (not to mention GAF and Twitter) woke to find we'd been charged again," Eurogamer reader Toaster05 told us. "Personally I'm up to seven transactions at this time."

GAME customer Mark Pickard explained on Twitter that he had been forced to contact his bank after discovering that the retailer had now caused his account to go overdrawn: