I would be highly (as in, 99.99%) suspicious of any cold call from a company offering me a deal.
Search this forum for M&J - they are a "trusted partner" of o2 that calls customers offering new deals.
Unfortunately they stick true to the principle of if it's too good to be true.
Don't accept anything offered over the phone.
Ask for everything in writing.
Then check it independently yourself.
Please note, this is not customer services and we cannot access your account. Do not publish personal details (email, phone number, bank account).
Link to our guide on how to contact them can be found here
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