Bank mayhem as TSB lock accounts and send £13,000 to wrong customer

*sprints to cash machine*

High-street banking giants TSB have had a bit of nightmare after their customers were left unable to access their money after the company attempted to upgrade their online banking system over the weekend. It meant that some of the bank's users could see details of other people's accounts and that many of the balances were incorrect. Laim McKenzie, from Paisley, Scotland, suddenly found himself with £13,000 resting in his account when he managed to log in to check on Sunday, despite actually being in his overdraft. He checked the app on 6pm on Sunday evening and was shocked by his suddenly substantial balance in the black. The 20-year-old told the BBC: "I saw the details of one other account holder, as well as my own. My balance, because of my overdraft, is in minus, but my balance was showing at £13,000. I closed the app and went in again at 19:00 and only my account was showing - but my balance was showing at zero. "I've closed the app again and have not been able to access it since", he added. Other angry customers took to Twitter to express their frustration at not being able to withdraw their money with many even demanding compensation. https://twitter.com/CBXDesignUK/status/988182720403726336 https://twitter.com/Rachael60369439/status/988110749607321601 https://twitter.com/Bec_701/status/988116770916651009 https://twitter.com/mrsyasminxo/status/988157865608273922 https://twitter.com/andwat83/status/988137880064348160 https://twitter.com/eyowlet/status/988141264573992960 https://twitter.com/cupcakesandacid/status/988186622951903232 Somehow, amongst all the chaos and rage TSB did manage to keep at least one customer: https://twitter.com/GrzegorzPrzyby5/status/988331233653424128 Because he understands the "complexity of a system upgrade". Absolute gold.