WiFi not working

[Georgia1231]

We have the new gigafast internet installed, since it's been installed last week it is really poor cuts out all the time. 
we have run internet tests roughly 5m from the router with no electrical appliances in between and it is only running at 250-300 maximum. 
we have a booster further down the building which doesn't seem to be doing anything, when we run a test it was showing 17 right next to it. 
this is the third time we have tried to resolve this, please can we have an engineer out to look otherwise we will cancel and change providers. 

[Brill+Gill]

Hi @Georgia1231, I’ve escalated your post to our Community Messaging team who will invite you to a private chat shortly and help you with this. 

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Here's more information on how Community Messaging works - https://helpforum.sky.com/t5/Did-you-know/Escalating-a-post-to-a-Sky-expert/ba-p/3711147#M141