Vodacom lies

Got a call from vodacom to say my existing contract is due for a upgrade and they would send me a phone within 5 days. However to date i have not received anything and they keep telling me i should keep waiting. It's been more then 2 months s already and I am paying the new contract without no phone. After the 2 years i have been with vodacom i would expect better customer service. Due to this i would rather prefer canceling my contract as i am 65 of age and cannot add issues or problems to my life. Kindly requesting to have this rectified as i am tired of getting false promises.