Poor internet speed

Level 1
I need someone to explain to me why night, after night, my internet speed is on average between 2 and 6mbps. This is after I have recently PAYED EXTRA! To acquire the higher speed plan for which I have $60per month deducted from my account.
If I was to only pay $2 to $6 per month after promising to pay the $60 would you not be upset and demanding action be taken?
How is this fair? I can understand a busy load here and there, but this is on a nightly basis.
Hi there             

 Welcome to the community,


Could you please send me a PM (private message) with your CID (customer identication number) or your mobile phone number so can look at this service for you 



kind regards