DH and I are doing up our first house and are on a very tight budget.
We're had to install a central heating system, bathroom & kitchen. Plumber had (verbally) said he would install sink and gas supply to oven.
He then said he didn't remember agreeing to this but he could do it. Fine, great, we thought.
We have just received a £400 invoice from him, £300 for installing sink (everything already there & sink came with waste) and extending the gas supply to oven.. This took him a morning, if that,and materials only come to £20 by my calculations (plumbing kit & pipes).
AIBU to think he is overcharging us and to challenge him?