I have an o2 open account which comes with 2 friends and family discount codes. My wife is upgrading with o2 and I’ve followed this instruction to apply the discount to her new contract: “To redeem, add the codes into the online basket”. The only place I can see to enter the code is the promo code section but when either code is entered it says “promo code is invalid”.
Any ideas why these codes aren’t working or what I’m doing wrong? Thanks.
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