pathetic customer service

i previously did put a complaint in for the same query for a tablet i was phoned last wednesday to say the tablet is fixed and tested i can come and collect on saturday the 2nd of june i went to fetch the tablet and it is still not fixed and picking up the simcard i think it is pathetic service and i feel that vodacom head office or where ever the problem lies is pathetic i will soon be paying for a tablet that i have not had i feel that the tablet must be replaced immediatly due to back customer service and poor service