Cancel the upgrade

On the 5th of January i called in to cancel my upgrade with them. The lady on the phone said that DSV should deliver the phone back and as soon as they do Mondo will send me a referral to me to go and do my upgrade in store. As i need a phone. Yesterday i went to mtn and the upgrade was still not canceled. So i called in again and they told met i should have called when the phone was send back. By my husband only got that sms when i was busy on the call. So the lady said that i will get the referral at the end of the day. Guess what... I did not. Mondo, please cancel my upgrade so i can get a phone.. The number is ***