Service due indicator

[The1GDP]

Hi, Try as my garage may, they reset the service due indication, see the 'in progress' and 'completed' message and after a couple of days, up it pops again! And the same thing happens when I try to reset it with open bonnet, open drivers door, throttle and brake pedal etc, 'in progress' and 'completed' but a couple of days later, back comes the service due message. Ideas and options most welcome - please. 🤔😆😒