Horrible customer service and not caring about existing customers

I am very very disappointed with the service of cell C. I. Called them on the 16th of September 2022 to lodge a complaint regarding the poor service that i received when i upgraded my contract. I only learned after i have upgraded my contract that at an additional fee you can add a smart watch to the phone that i upgraded to being a Z flip Samsung. The consulted failed to advice me about it as a result same was not taken . After i have learned about it i called them to enquire as to why i was not informed when i was called regarding the upgrade, the way the consultent was so push and eager for me to upgrade its disappointing that he would fail to advise me regarding that and they had confirmed that the special was there when i upgraded it was just not for me . They only keep the extras to wow new customers as they only care about new business and not maintaining the ones that they have already. After lodging my complaint i was told they are escalating it and it will take them 48 working hours for them to revert back to me. I then receive a call today and to my surprise they have registered a complaint wrong as the rude lady i spoke to who lacked customer service and cut the called when i asked for her name told me my complaint was that i received a wrong package what is worse is she said she was from the cancelation department. So instead of resolving my complaint because they failed me as their long standing customer given that this is my 3rd upgrade and i never missed a payment they would rather cancel it, when i quiried that and the duration it took for them to revert back to me she still say she is going to escalate it as she only got it today then she started raising her voice at me. The thanks i get for being loyal to them. This is the most horrible service thad i have received. They failed to tell me about the smart watch so that they can tell me that they cannot sell it separately or add it to my existing contract i must pay cash for it whilst they had a duty to advise me regarding all the spacs that the phone comes with at the initial stage and now they make their problems mine. All i hear is we are sorry there is nothing we can do. Cell C your wronged me and i have been waiting for more than 5 business days for you to listen to the recordings and revert back to me, not for you to send a rude consultant who cut the call in my ears with wrong information.