Vodacom bad attitude and airtime theft

I have changed my contract from the talk 500 with vodacom as they refused to do an upgrade on the same package plan. I therefore changed to R 50 top up and took a contract out elswhere for my airtime usage. The R 50 kicked it yesterdai. After making 3 calls on a sunday for abt 2 minutes each the airtime was finished. Shocked i phoned vodacom twice. The first time a lady called \corella"answered. She cut me off. The second time another lady answered after hearing my query she insisted it was internet usage"