HP protected cartridge

I took my HP OfficeJet 7612 printer to HP's Service Centre - Ensure, Midrand on Tuesday 01/03/2016 due to the fact that it was struck by lightening. As a result of it being struck by lightening, I was unable to take my cartridges out of my printer before taking it in for repairs, as the carriage wouldn't move. I collected my printer today, 08/03/2016 and after setting everything up, I switched my printer on and got an error message saying \HP Protected Cartridge Installed - Replace Cartridge\". I also noticed that the cartridges that are in my printer, are not my original cartridges as the ink in the cartridges in my printer now, after the repair, is just about empty and my cartridges were nearly full when I took my printer in for repairs. As as result of this, I have no option but to assume that my cartridges were taken out of my printer and I was given someone elses cartridges that naturally, won't work in my printer."