What's the deal with Worcesters MP never responding?

I saw in Worcester news our current MP is defending himself against (absolutely true) allegations he doesn't answer to constituents.

He's not answered anything I've written to him or other people I've spoke to have written to him since becoming MP.

He's barely in parliament and barely speaks.

Worcester essentially has no political representation in Parliament. Surely this should be deemed illegal and we deserve a by-election so we can get someone in who actually represents constituents?