Lying to sells contract

A few Months ago a sales consultant from Mondo Phoned me with a special....I asked her about 5 times if the contract she is trying to sell to me is a top up and she kept on saying yes, Tried to load airtime no luck...gave it a few days and still no luck, someone from them phoned me again with another offer I told her my situation and she said my contact is an open contract not a top up, and she couldn't help me regarding the issue...I went into Telkom Irene Mall, spoke to a lady there and told her my problem and she said she can't do anything she needs to log a request from head office and they will phone/email me. the next day received an sms thanking me for updating my contact details. Tried to Phone Mondo the weeks before last week on hold for 15 minutes, tried again every second day from then and still NO ONE answered the phone. I have phoned about 7 times and the phone just plays that annoying song. No answers and so service.