CELL C IS DISHONEST AND RUDE

I was due for an upgrade on my router data plan and I was called to upgrade in July 2022. On my previous plan I paid less than 300 per month for 30gigs of data devided into 20 gigs day time data and 10 gigs night time data. When I upgraded I was offered the same deal at 298. I was billed correctly in August 2022 but suddenly billed 587 in September 2022. When I called customer service to get to the bottom of this I was rudely that the 587 was the package deal I took. I asked to cancel the contract and was told I'll have to pay 7000 which I can't afford. My case was escalated to the billing department which called me back 6 days later and not within the 2 working days I was assured. Ref ***. When I was speaking to the billings department lady she too rudely told me that all my discounts were loaded and that the 578 was my bill. I tried to explain to her but she wouldn't have it. I asked to cancel the contract she told me I need to pay 7000 as well but I didn't understand why I had to pay that much money as I didn't take a device. I'm using my old router she refused to break down the 7000 cancelation fee and instead said she'll escalate my case to the finance department which will call me within 2 days. Its been 3 days and they haven't called and she didn't even give me my reference number. I have been with cell C for years and now I'm highly disgusted with their services. Their consultants are rude and will do anything for a sale. I was **** to and now I'm expected to pay this bill. I have 2 kids below the ages of 2 I can't afford to pay 587 a month. This is unfair and whe I try to get it fixed, I'm set pillar to post. Don't take up contracts with Cell C, just don't. They are beyond rude😭