WORST experience ever after being a paying customer for almost 5 years....

I have been trying to make a payment arrangement with Cell C since 23 November 2020 i have called their service centre 3 times and have received a reference number and assurance that i would be called back... i have received multiple smss in the meantime from cell c asking me to call them to make a payment arrangement or my services will be suspended. Well i have been trying and in the meantime my services have been suspended i then tried calling again and again still no call back i then emailed the accounts department no response either.... then i received a sms stating than my account will be permanently disabled and i will loose my numbers... i then called again and no response still after 5 days... and what do you know i have just been informed by family members it seems my number doesn't work anymore.... well my last resort is now to permanently change my number and i will NOT pay a cent to Cell C unless I get my number working again since I have tried from my side upwards of 10 times to make an arrangement and I was not even given a courtesy call back... oh and lastly even the lady i spoke to in the cell c call centre told me that they have multiple calls a day from people that is not getting called back from the payment arrangement department and they can not call them she doesn't understand why they are not working on the enquiries received....