paid deposit $1k 2 weeks ago to kian classic

reason is they quote me only $7k for island kitchen plus kitchen (dry & wet) ..solid surface.. they also went to my house n measure

to cut long story short.. they send me quotation n it was $18k..of course im furious... at 1st said $7k everything ..tat y we are attract to it and agree paid $1k deposit
they said must paid $1k as deposit for the drawing...

this sat morning im going talk to them and ask what happen...

anyone can share how can i solve this issue?
below is their quotation to me:-

PACKAGE             11,988.00   11,988.00
           
Kitchen            
Using Melamine ABS as per drawing        360.00 

Accessories           
1. Solid surface KC          1,890.00 
2. Handle             ~ 
3. Frosted glass aluminium frame 808 (3pcs)    750.00 
4. 180 swivel basket           400.00 
5. Drawer extra 1 tier          100.00 
6. Undermounted sink          250.00 
7. Soft down stay (1pc)         80.00 
                                           3,830.00

Island            
Using Melamine ABS as per drawing       1,160.00 
Accessories           
1. Solid surface KC          1,200.00 
2. Handle             ~ 
3. LH 150 source rack         750.00 
4. Drawer             300.00 
5. Open hole for hob          150.00 
                                        3,560.00
Grand Total                                                                                                     18,178.00

that time, she told me $7k for island + kitchen... that y im so interested....some more for solid surface...haha... i plan to cook at my island instead normal kitchen that near window..

thinking of it..i think those add on accessories is the cause of her quotation..and it is super expensive...wonder if i buy ikea accessories and attach to their kitchen..not sure can or not... anyway..going talk to her this sat..see how it goes..