Since i cant fix or reformat my newly bought micro sd card (i bought last dec 14 2017) i tried to take it to the shop where i purchased it…but sadly said they only do 7-days replacement and no other form of warranty…and sadly i cant seem to find any sandisk costumer service center here in the philippines…so i was wondering how can i use the said “5 years warranty”

Submit a support request and they should take care of you.