Home unresponsive, send help

i took my ds in to have the shell replaced a few years back, and when they gave it back to me the home button was not working anymore; i took it back to them and was told they would call me when its done. fast forward 2 months and they hadnt done anything with it n basically told me i was s.o.l. i have a feeling something is just loose or not connected correctly. Links or suggestions would be helpful, warranty voided as i took it to a non-nintendo affiliate repair source.