bad customer service and false representation of products sold

I recentcly bought a Hauwei P30 Lite, took the phone on contract, i am appauled by the service i recieved from Vodacom Online. Firstly i asked that they convert my current vodacom number to the contract as i do not want to change my number for obvious reasons ... that was not done, Secondly i waited a full month and a half for delivery of the phone and when i enquired i was told the contract was cancelled, how that was possible is beyond me as i have a tracking number for the delivery, Thirdly i cannot use the dual sim card function as they blocked that function, .. had they activate the contract on my old vodacom number as initailay requested when the contract was taken out i would not need to use the dual sim function. why sell me a phone that has a dual sim card function if i cannot use it,. I am terrible dissapointed with this service and i would like to cancel my contract seeing that i was given a false represntation of the product i purchased..