Worst service ever

Been my father's proxy for over 10 years at Vodacom but because I made an online upgrade can't check in on the upgrade or cancel it because its been 3 weeks when I confirmed the upgrade it said 5-7 business days no back log and there is no tracking information when I called I was advised I can upgrade and just send my proxy letter in wasn't an issue and your overseas number doesnt work when not calling from a vodacom number so there is no solution spent R100 doing the overseas call to patch it in and before he could even answer questions call cuts holding 1 phone on a vodacom call against phone 2 with dad on the line they cant hear each other what must one do I have all documentation but because everything must be done over call these days no one can help instore most useless thing ever Vodacom didn't take into account that life happens proxys come into play and your vodacom account payers cant even contact you out of the country. Now I am moving the upgrade is due to deliver here and no one can help