Terrible service and the lack thereof

Yesterday i phoned cell c and asked them if i have any of my contract numbers due for an upgrade, the customer representative tells me we have a contract eligible for upgrade. I rep**** asking for them to send through the documentation to sign that we can go ahead with the upgrade. We are a business client so of course they needed all our documentation. We recently had a name change done on our company no changes to the actual reg nr only to the company name which i also attached with the required documentation. The representative then told me not to worry everything will be sorted before end of business day and i can come in and collect my new phone. Around 5 i called again and enquired on the progress i was then told they are waiting for head office to approve the upgrade but they first have to update our company details before they can proceed to do so they have all the necessary documentation to update these details. Phoned again this morning and got told no don't worry it will be sorted out before end of business day surprise, surprise still receiving the run around told the representative to please follow up with them around 12 and get back to me waited until 1 with no response and then proceeded to phone again where the representative told me sorry head office sais you have to wait it might be today but maybe only tomorrow. We have been having this issue with our upgrades almost every single time, every time the same story and it takes days to do an upgrade and this is the service they give to a customer who has multiple business contracts with them and have never missed a payment. It boggles my mind that it takes over 24 hours + to simply change a company name on their system. I am absolutely fed up with Cell c at this point and am considering cancelling all our contracts with them as soon as they come to term because dealing with Cell c has become an absolute waste of my time.