Can you lighten / highlight semi permanent brown hair within a few days?

I get married on Saturday and had my hair done 2 days ago at my regular salon. Not for the first time they messed the colour up (I should have known better than to go there again but since it's a reputable salon and they'd given me a voucher entitling me to a large discount considering it normally costs over 拢100 I thought it was worth going). Instead of it being what I requested i.e. brown with 2 different shades of blonde running through it, they made it dark chocolate brown with random, very ridiculous looking, almost grey highlights. They then washed a toner through in an attempt to put some warmth back into the highlights but it still wasn't right and I couldn't face asking them to sort it again so instead I dyed it all over myself yesterday with a chocolate brown in order to even it all out a bit. This worked a treat however I miss having lighter hair and am worried I'm going to look washed out on my wedding day.





Is it possible to get my hair lightened so soon after having it done? What are my options?Can you lighten / highlight semi permanent brown hair within a few days?
Seeing as it is your wedding comming up I would just go to another better salon to sort it out. After all these are photo's you will treasure for the rest of your life and you probs don't have the time to sort it out yourself in time as you are prob so busy!