My elderly mother in law asked me to pop over last night (we live next door) because her sky and internet went down.  She'd called both sky and vodafone but either during or right after the call it came back.  But she said she smelled burning.

As soon as I went inside there was a distinct and strong smell of what I would best describe as a strong smell of slot cars and slight burning.  It wasn't faint, it was strong.

I couldn't see anything immediately wrong, but while looking I heard a definite 'click' and the sky and internet went out again.  Looking at her router (?? the thing that is plugged into her fiber ONT??? sorry i know nothing about this) it had power but no wifi or internet light on.  After about a minute both lights came back on.

A few minutes later there was another click and it happened again. 

I told her that I suspected her router was having electrical issues and that she should turn it off and call vodafone the next morning and ask for a replacement router.  I'm worried that it could cause a fire - I know nothing about this stuff but it definitely smelled like burning to me.

She called today but hasn't had any luck.  She said she had real trouble understanding the person on the call, but effectively they have told her that her connection seems to be working fine so there is no action they will take. 

I am very concerned that the router is faulty and that there could be electrical issues.  Smelling burning isn't something I think she should overlook [or is this something that we shouldnt worry about].

Is there someone other than the general help line that she cab call to address this?  She's pretty stubborn and wont go without her internet despite me telling her to turn it off and ring back so I need to find someone who will take it seriously if that's required.