Bills and accounts / Paying your bill

1. How do I set up a Direct Debit?
2. Can I cancel my Direct Debit?
3. How can I change or increase my Direct Debit payments?
4. How are my monthly Direct Debit payments calculated?
5. Can I change the date of my Direct Debit payments?
6. Do I still need to pay my Direct Debit if my account is in credit?
7. How do I change my bank account details?
8. Can I pay my bill by post?
9. Can I pay my bill online?
10. Can I pay my bill by credit or debit card?
11. Can I pay my bill at the Post Office?
12. Can I pay my bill at a PayZone?
13. What will happen to my payments if I use more or less water than was estimated?
14. How can I pay my bill?
15. Can I pay my bill at my bank?
16. Can I pay online without a payment slip or my 13-digit payment reference number to hand?
17. Can I make additional payments online if I have a payment plan?
18. Why do I have a problem making a payment online?
19. Can I pay my bill by phone?