User Activity

I have been with 02 for years and I have just 'upgraded' from a plan costing £9.92 per month to one costing £8 per month with more minutes, etc. My question is two-fold. Why do O2 not inform their existing ,valuable' customers that they are paying mo...
I've just been charged circa £25 for scam texts that I never signed up for and never received. When I contacted support via the live chat, the attendant explained that I must have given permission to some company Tap2Bill to send me the premium texts...