poor call center service lost all my data

I called vodacom call center yesterday at 17:25 +- and ask if I can cansell my port to mtn as I wanted to port to mtn ..The call agent told me to hold on .so I holded on .The next moment she said your port has been cancelled and ,I did clearly asked again are you sure it's canceled. She just said yes and baai.baai.not even rate my service or anything ells she can help me with...so 10 min later I went and buy 275 and 29 recharge voucher and converted it to 3 gig data.later that night my number was ported to mtn and vodacom disconnected and now I lost R300 of airtime ..and the call agent dit lie to me or even explained whats going on.. now I lost my airtime because of call agent lying to me