Help with capital gains tax

I've just sold my house in mallorca and i need some help...

I bought in dec 06 for 293,500 plus 20,545 iva, I have sold for 350,000 and been charged 3% capital gains tax of the sale price, which means today 10,500 was held back.

can i claim this back and surely the CGT should have been charged on the gain and not the sale price, can anyone help?

Thanks

Assuming that things work on Mallorca as on mainland, the 3% is a withholding tax.   

My understanding is that you should now make a proper return which shows your actual gain after expenses and allowances  and this will be taxed at 18%.   if that works out at less than you have paid then you should get a refund, if it works out as more then you owe them more.  On this basis and looking at the figures they owe you about half of what you have paid or even less if you had estate agents and lawyers fees to offset.  

If on the other hand you are a resident and you are rolling over the full €350,000 into a new purchase of a principal residence in the next two years you will not pay anything at all and you should get back all the tax paid.

If I am wrong I am sure Maria will tell us!