User wallet balance keep changing to random numbers

I have a very small issue. My website is a small bitcoin exchange website. Every user has their own personal bitcoin wallet. To deposit and send. Now the small issue is. When a user makes a deposit the amount shows correctly. But when the user refresh the page the amount shows different for example if the user deposit $24
the account will show $24 then refresh page $200 then refresh page $150 then refresh page $50,000.00 this is a database error that needs to be fixed. I need this done by today in 30 mins please thank you.