Sales, Customer service and contract

I app**** for a cel c contract 2 weeks ago I was approved for 849 a month I put my order through with Heather and was told I will receive a call from delivery department. On Monday I was phoned and told by Heather the Z flip is now out of stock and the newer version is going to cost more... being disappointed as this was the phone I wanted we tried a view other options and eventually I agreed to the deal she offered me she gave me a deal for a galaxy s21fe and a watch for 849. On Tuesday I received my contract and signed and sent it back. On Wednesday I phoned 084135 to follow up on when delivery will take place as I'm found ro Port Elizabeth for a funeral so just to make sure that I'm here. I was then transferred to Contract department they asked me for my cell which I gave and was told it's a incorrect number ibgave my ID and they said they will put me through to sales asking why I was told their system is down sales then told me they can't help me I need to speak to the Heather I was transferred and then cut of. I sent Heather a email to contact me she did and also transferred me to contract department she said she doesn't work with contracts on this day I was transferred 15 time with no success I then went and looked at my contract properly and saw my details were incorrect only thing that was right was my banking details I emailed Heather again and she then transferred me again rhen contract transfered me back to sales again so it went on and on I then phoned customer care again and said someone is trying ro make ***** on my contract and no one wants ro help me fix it gies what they did transferred me again back ro sales saying that the person that helped me apply mist fix as the error comes from her. I maolialed Heather again with the wrong information on my contract. On Thursday I phoned again and was transferred again to sales where I spoke to a lady called Keabepswe she said she is transferring me to Heather as Heather needs to fix it so she did I rold Heather what she said and very unprofessionally she phoned her and they had a full on argument infront of me to the point where Keabepswe cut Heather of I was in shock. Today I get a email from Heather saying my application has been put on Hold??? Now she needs more forms??? Everytime I ask to speak to a manager no body wants to put me through????? I'm taking this after further this has caused me so much stress and anxiety all I wanted was my contract details updated and my package delivered????