Cost of SIM only plan going up at checkout

[GLAMBOURNE]

I'm a previous Sky mobile customer (currently paying £4.75 per month). I'm attempting to add an additional SIM to my account for my child. 

I selected the 3GB deal, which is currently at £6 per month (reduced from £10). 

When I select and it goes through to my basket, it is displaying it at £10, with a monthly total of £20. 

It is incorrectly displaying £10, when it should be £6, and don't understand how the monthly total has jumped to £20.

[63johnw]

Hi @GLAMBOURNE  try a different browser, are you logged into your account ? If it keeps doing it then call sky on 150 so they can process it. I have just tried and it's showing the reduced cost for me all the way to checkout but obviously I can't proceed further as I don't want to order one !