Can’t pay one-off payment with my card

[ClaireH44]

I’m trying to upgrade my phone and plan, sorted a good deal speaking to an advisor, but when it came to paying a one-off fee for delivery (£4.99) my card was rejected! Tried my partners and my mum’s card, they were also rejected. The advisor asked if I had another card to pay with, and when I said no was basically told I’d have to apply for a credit card because other people have credit cards they can pay with! Spoke to my bank and there’s no issue with my card, they said there’s no evidence of payments being declined and my card/apple pay works everywhere else. 
Anyone else had issues paying with their card? Tried to pay online and over the phone. 

[JadeF]

Hey @ClaireH44 

Welcome to the Three Community. 

Oh how strange, Claire. We're sorry for the hassle this has caused.

When you've attempted payment online, are you getting an error message? 

We'd be keen to have this looked into, so the more information, the better.

Jade