go to phone pay plus here
http://www.phonepayplus.org.uk/output/default.aspx enter the number and follow there advice you can also raise a complaint there
It says reply with STOP ALL for that company
But if you did not sign up raise a complaint
iPhone 11 Pro 256gb on unlimited data
iPad Pro 12.9” 2020 256gb refresh o2 family discount
Apple Watch series 4
My first mobile was in 1995 a CM-R111 from sony on Cellnet.
Wincanton South Somerset (Full 4g 3G 2g indoor coverage) Remember we are all customers here not customer services