Natwest admitted that there are still ongoing problems with the system, preventing over 12 million customers from getting an up-to-date view of their balance, as well as stopping them from making payments. Payments in and out of account are now being made Wednesday evening.

In a statement, the bank said  "We can assure our customers that this problem is strictly of a technical nature and will be fixed as soon as possible. We can also confirm that no customers will be permanently out of pocket as a result of this." 

The huge glitch, also affecting online banking abilities, meant that it was companies that faced the disgruntle as their workers were left without wages, as well as people being fined for late payment of bills due to insufficient funds. Also, many companies had to hand out cash wages from their own pocket to make up for the mishap.

At present, the computer error has been fixed but the bank still faces an enormous backlog of account payments which will inevitably affect businesses as well as individuals.

The worst of the reports on how it has affected Natwest bankers were people being left homeless as computer problems meant house purchases fell through and travellers being left stranded abroad.

Around 1,300 branches stayed open on Sunday until 6pm to give customers access to cash and deal with enquiries. Also, thousands took to social media to cite their grievances, with watchdogs urging the RBS-owned bank to pay compensation as a good will gesture.

The fault is said to have occurred due to staff attempting to install a software update on RBS's payment process system that ended in the computer system being corrupted.