Cell C has no clue what customer service is!

It is a pity that I am forced to give a star as Cell C does not deserve this. You guys release your August 2020 booklet. I then went to upgrade in store as I especially waited for the 11 August 2020 as I wanted to enter your win win win competition. I get to Cell C Canal Walk, Century City, Cape Town and am told I cannot upgrade instore as they do not have the Samsung A30s in stock infact there is not more stock left of this handset. I then opt for the Hauwei Y7P I am then told that they cannot upgrade my two handsets as it is 1GB PINNACLE they only upgrade on the 2GB PINNACLE contract. I in turn call 084 143 and am told that the store refuses to upgrade customers to the 1GB PINNALCE in store as they get less commission. This is completely unacceptable as I wasted my time and petrol driving to the store. I then get to work and contact 084 143 again in order to upgrade. I now see I can get a free face mask and hand sanitizer per handset as well. I proceed and call and spoke to Jabulani Mkagwe. He was nice to start off with and assisted me. He only forwards me one contract agreement via email and I am waiting on him to forward the contract for my other handset and nothing. I then called him yesterday, 11/08/2020 and waited for his call and still nothing. I called again today and left a message for him to call. He eventually calls me and screaming at me talking over me, refuses to answer my questions and drops the call in my ear.

1.) Why is Cell C advertising handsets and contracts when the phones are not available?

2.) Why can I not upgrade to a certain handset and package in store?

3.) Why are you agents and managers so rude and unprofessional????!!!!