I screwed up my order,oh no!

Well I am a new representative of a company I shall not name. And to be so new I am doing quite well in sales and commision.I made enough this time to pay the light bill.The problem is The last time I put a sizable order in I forgot to hit a certain button,and just assumed it would arrive like the times before.
Nope no order.So Then I make the mistake of thinking oh no problem I'll just put it in this week and told all the customers it would be in a week late.Nope try two weeks late because apparently you can get your order once a week they will only send it every two weeks no matter when you ordered, and forget trying to talk them into shipping early if you offer to pay more.
So now I'm getting a couple of calls and e-mails (where is my order).I am explaining this and I feel like everyone will accept their order but I'm worried about losing them as customers because alot of them are first time customers of mine.And I'm really hoping that No body changes their mind about still buying theirs because I don't get my money till they pay and I pay the company.Whats left after the balance is mine.I already know how much it will be,like I said enough to pay the light bill.
My husband says I should stick with this company and still try to sell no matter what happens with these customers.Because he thinks I'm good at it and probably not likely to make a mistake like this again.
I think he's right, but it's racking my last nerve.