Multiple errors on my profile and no one can help??

Three big issues.Phoned customer care, was told they cannot help. Issue1:Lately, my data is used for YouTube, even when buying YouTube data. I am constantly buying expensive data, while I do have YouTube data.Feels ******* to me. Issue2:When enquiring about Issue1, I was told that my number was deleted and not in use since 2019.I use this number everyday and pay monthly contract fees? Issue3: I have a pay-as-you-go number, which has now been given to someone else. My OTP's and sensitive data is sent there, I was told that nothing can be done to remedy this through customer service. I currently have 3 contracts, am seriously considering leaving to another provider.