Poor customer service & *********** call center agents

I bought R55 vodacom airtime voucher on 2 consecutive days in October the other voucher i did not use as i had bought it for my son, now i lost those sms on the phone and i am not sure which one exactly i did not use. I phone customer care on *** the consultant said i must call *** the number is always busy, i called back the 0861 numbet another consultant gave me a new number to call which is *** the number is no longer in use i called again customer care the lady ask m irrelevant questions and i axhausted my airtime without getting help, i re loaded airtime and call the consultant Mlu who tried to help apologised and asked to transfere my call to the relevant department while i was hold on the line there was a voice message saying there is in error in transferring a call it cut me off and did not send it back to the consultant and to think i axhausted R35 airtime trying to recover R55 airtime voucher, to make things worse is that it is not a first time i experiencd such problem in January /february 2020 i experienced same problem and ended up forfeiting my R110 voucher because i couldn't get help.