BT going round in circles

I have Infinity 1 broadband package and have had good speeds on and off over the last 14 months often up to 32 Mb. I now am recieving 17 Mb maximum, sometimes down to just 16 Mb

I have contacted BT three times over the last week

First time by chat, they said that I should only recieve 17 as the maximum I pay for is 19 and that I should be happy, this took two hours. I pointed out that I pay £34 pm and that I could recieve 17 on their £24 package. They did not see that there was a problem.

I then phoned, this was another hour and a half. He said there was an issue at the exchange and that I should be recieving at least 32Mb for where I live and that he would put in a fault report. Someone would contact me within 24hours just to confirm the issue.

No one contacted me.

I then cleared my morning to contact again, three days later.
I phoned and again went through all the turning off, turning on, have I got a filter, where is the modem situatuated, were there electrical items near it. After 40 minutes was then told that 17 Mb is reasonable. When I said that I have often recieved more than that, in fact in the 30's he disputed this. I told him that I was recieving 17 before Fibre came to this area and had changed to a fibre package as soon as possible, He said I needed to be satisfied with 17Mb.

I have often recieved more than 17. I run a small b and b , but now even just me, am finding the BBC does not like my broadband width even for radio sometimes.

Please has anyone any ideas how to stop going around in circles. I have spent almost the length of a working day trying to get some sense out of them.

Be very grateful for any advice. Thank you