I would like to add fund to my wallet to buy a DLC, but I cannot. When I go in y account, I have non option that allows me to add fund. The primary account of my PS3 have been deleted and I don't know how to make the actual the primary one, to be able to buy.
If I get access to the master account, how can I switch it and make my account the master?
You can't. A sub-account can't be made into a master account. You can make a new account though.