My fiance and I went back and forth negotiating a price with our caterer months ago. Now, two weeks before the wedding, they've come to us with a "revised estimate" raising the price of food from $22.50 per person to $30 per person and the price of service by $1000. The total quote has gone from $5600 to over $8300! We have the original pricing in writing, but they are refusing to honor it, saying it's only an estimate and that the woman who negotiated the original pricing with us made a mistake. We can't afford the new price (and are not happy about being asked to pay so much more!) Our wedding is 2 weeks away and it would be difficult to find another caterer. What should we do?