What's so difficult

I am extremely annoyed with cell C! I purchased 2 prepaid airtime vouchers on Saturday morning - 19th March. One voucher my wife put in with no issues. At the same time I attempted to put the other voucher in, only to get an 'invalid voucher number' message. I called customer care and was told to wait 10mins, a little while later I called again and was told to wait 2 hours. When I called again 3 hours later, I was informed that I was not the only person experiencing this problem, I was given a 'trouble ticket' and assured that the technicians were working on solving the problem. I called this morning again Monday 21st March and was once again told technicians were working on it. When I asked how long it would take (as I needed the airtime, that's why I purchased the airtime) I was informed it usually takes 2 WORKING DAYS. Which tells me that there were no technicians working on solving the problem on Saturday or Sunday. So what should have initially taken 10mins is now, at CELL C's best, going to take 4 days!!! Either the technicians are useless or they have to catch up on 2 days of problems. Which is why I can't understand why something so simple has to escalate to this. JUST CANCEL IT OR BETTER YET LEAVE IT AS INVALID, AND SEND ME A NEW VOUCHER NUMBER! NO TECHNICIANS REQUIRED!