Vodacom. zero rating for service.

I have for a couple of weeks now been trying to recharge my Vodacom account online using a debit card, I dial the number given on the Vodacom website *135*02# but then get a message that they are temporarily off-line or that there is something wrong with the MMI code. Customer service does not work either. What does an increasingly octagenerian have to do in order yo get some service from vodacom. MTN might give a better service, I am thinking along those lines. In my view Vodacom gets a zero rating.