Bad customer service

I upgraded my account telephonically on Thursday 11/1/2024. Received SMS to advise approval was done and phone was ordered. When I did the upgrade the lady confirmed that the Phone is in stock. Tried to phone customer care yesterday on 135 but could not speak to any consultant all automated. Today phoned again and only way I could speak to a consultant was to choose the option cancel my contract. Lady checked and confirmed that the upgrade was approved but could not assist any further. Then gave me another number to phone only to be again told that the approval was done but that she will put me through to the sales department. The lady advised after 45min on the phone that the approval was done and at the last stage which means the phone is not in stock. she then said she will check but the phone call cut out. I just not have the strength and patients to phone again and go through it all. this is absolutely rediciouless and very poor service. I need to know when I will receive my phone.