O2 UK Pay and Go payments taken from my credit card that are unknown

[Suzanne2406]

how do I find out what mobile number is being used on my credit card? 6 transactions have been taken on two seperate days that aren't mine?

[Cleoriff]

@Suzanne2406 

You need to call O2 and ask for the Fraud dept. All numbers are in this guide

Guide: Coronavirus Community Help and Support 

Advice from an O2 Guru regarding a way to get through:

When you call, you will be asked for the reason you are calling,

Stay silent for 15 seconds and you will be taken to the keypad options.

Press 2 for Everything Else

Press 5 for More Options

Press 7 for Anything Else which will put you though to an advisor.

Press Upgrade, Lost/Stolen or Fraud if you have to.

8am is the best time to call

[Bambino]

@Suzanne2406 You need to notify the bank your card is associated with as well, if you haven't done so already.