Highly disappointed with uber eats

I wanted to order lunch on Oct 24th, I chose item and went to checkout, my order was declined due to insufficient funds according to message notification, I did have money in my account, in the next 2 minutes 4x the amount of order was deducted from my account, I reached out to them, they said it is in holding, I must contact my bank when they will release, according to their investigation. But why was it even deducted when the order still lies in cart, I never received anything. The money was deducted from my account. This is ridiculous as I need the money urgently, I need the money to survive, pay day is in on Friday. I have kids to see to.