Took my 230 to the garage to have new discs and pads fitted the other day.

When it was returned, the memory buttons on the seats weren't working. My pre-sets had been deleted and I was not able to set new ones. Spoke tot he garage who swear they did nothing to any of the settings.

Could they have been reset somehow? How do I get them back please? I'm able to adjust the seat, just not store the setting.