My payment from bank and your contract doesn’t match

[Abdullah8]

My total contract payment is £1236 on my sky app. And I've payed £993 already which I've seen from my bank statement that means I've still need to pay £243 but on my sky app it's showing remaining payment is almost £350 . Why this payment is messed up? 

[PandJ2020]

Do you have a dataplan as well?

[Abdullah8]

No I don't use any data or sim from sky