Rain support and billing

My experience with the Rain Internet it is very bad.when I join Rain they told me that There is No Contract No payment No Internet to my surprise last year after June 2023 The premium increases so I check finances that I can't afford it anymore.so I contacted Rain support to cancel my sim card then I thought it was cancelled because There was no internet by that time.so when I checked my account my bill was R1500 you I was so shocked.I payed it neh again this year after June 2024 I contacted Rain support to cancel my sim card because I can't afford R285 per month yoh When I check my bill on my account last month September 2024 They sad that I have Arrears of R855 without the internet I paid it again R855 so I logged in to my Rain account on the 29 September 2024 and cancel the sim card my balance was 0 then on the 1st of October 2024 I receive an sms saying that I have the areas of R285 and guess what the is no internet neh Even last month please help me My mental health is affected by this situation I can't even buy my kids food because of Rain billing ream.