When trying to apply my EE perk NHS code on checkout for an upgrade it is coming up with a "voucher not valid" message. I tried three different codes and two different SIM contracts to check for any glitches- none worked. I telephoned 150 but was told to get in touch with my HR dept. I am pretty sure my HR dept in the hospital won't be able to sort out the issue with EE systems.I see this is not an uncommon problem, please help!
