Moved from House to House, my bill went up from 28 pounds to 54 pounds, I'd like to get my discount back

Hello,

Recently, I Moved from House to House, my bill went up from 28 pounds to 54 pounds, I'd like to get my discount back, Tried to web chat and Whats up chat, all I get is BOT answering me with long hours waiting .

is there any phone number that I can call and speak to human ? or done it online !

Thanks for all