Scars, pores & dark reduce. Effects?

I have been applying creams, sunscreen for 4+ years, And have not seen any improvements. Each doctor I visit from practo gives the same set of medicines which results in nothing! I have also done chemical peels, derma roller,IPL (Intense pulse light) therapy multiple sessions which various doctors had told and this also gave me no better results. What I am looking for is having same complexion skin that of my below neck region(removing black marks, pores majorly from face). Please dont advise me to use sunscreen here for complexion difference as I already told I am using more than 5 years and seen no difference without using it also. Please suggest treatments (surgical, creams I don't think will work for me) which I can see results in less amount of time. Also, where in Bangalore I can do this? I want to know how laser treatment can beneficial me in this, is there any side effects? Thanks in advance for you time for reading this and for suggesting on the same.