Faulty rcd switch? - Electrical job in Norbury, South London

Job description

i think i have a faulty RCD switch in that one of the fuses/switches had tripped whilst i was at work and when i attempted to re-set the fuse and the RCD, the RCD switch will not stay up. Even when all of the fuses/switches are off the RCD doesn't kick in.
I also tried turning the main power switch off expecting the RCD switch to stay up and no luck!
Naturally i need a qualified professional to sort etc.,
The house was re-wired in 2008
thank you!

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Feedback for Kelly Electrics - Female Electricians

Job posted Friday, Kelly texted me Sunday morning - within the hour Kelly was at my house. Not as straight forward as i had hope (the job that is) but Kelly didn't give up and completed the job timely and efficiently. Very much appreicated and impressed. Will definately hire Kelly again (to solve the proble that caused the problem). Thanks Kelly! regards Lara