The Migration Board is the Swedish authority deciding on matters of residence permit. See their webpage for more information.
The Migration Board [Migrationsverket]
601 70 Norrköping
Sweden
The Swedish Migration Board's Public Contact Unit handles questions about visas, residence permits, work permits, Swedish citizenship and other issues in matters relating to aliens.You can also ask about case officers, processing time, and if the Swedish Migration Board has received your documents.
The Public Contact Unit's telephone hours:
Monday - Friday, 9 am - 3 pm
Phone:+46 (0)771-235 235