Provider sending me from pillar to post

I'm trying to update my bank details with Vuma who refers me to Payfast who can't even send me a link to my new email address. Why wont Vuma have an alternative way for clients to make payments...iv spoken to 5 of their consultants yesterday and no one can help me. I'm being g sent from pillar to post just because they won't update my details and paymaster sending me a link to an old email...I'm sick and tired. My calls and emails go unanswered. I have everyone's name whom I spoke to so if someone does not contact me today I will be sending more and more complaints on other platforms. If one of ur agents could just get a hold of payfast and advise them to send me a link so I can update my bank card and schedual a debit order. I'm working from home and this is going to cost me my job.