On my account are numerous calls from 07546 045127.

[Horatio1918]

Some are charged at £0.65. Where are they coming from? I have not initiated these calls

[madasaf1sh]

@Horatio1918 

We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. if you send them a message on Facebook (https://o2uk.co/O2CFB) , Twitter (https://o2uk.co/O2CTW) or Instagram (https://o2uk.co/O2CIG), or you can call 202 from your o2 phone

[Bambino]

@Horatio1918 See these guides:

Have you fallen for or been conned into a premium ... - O2 Community

A Guide to Deal with Spam/Scam Calls and Text - O2 Community

Tips to avoid unexpected charges on your bill - O2 Community