As others have said, you are looking for an abogado and maybe more. I do know a good lawyer in Sevilla, he does all my legal stuff and he is also a friend now after some years. I will not post his details publicly on here nor will I simply give them out via pm. Sorry to be cautious here but he is a busy professional. I could pass your details on to him if you wish but if that is something you would like, please pm me with enough detail for me to pass on to him and encourage him to contact you.