Can you post the stats from your router please
Need to post your router stats
What were you promised ?, months ago, long standing Infinity 1 customers were given a 'free' upgrade to Infinity 2 , ( obviously some didn't benefit if the line length was such that any upgrade didn't increase the download speed , but upload may have increased ) those upgrades presumably were completed months ago, if you are saying you were offered Infinity 2 as an inducement to re contract , then as already stated , post your router stats
you are on infinity 2 as can be seen from your up speed 14.79mb if infinity 1 this would be restricted to 10mb
have you tried test socket with a filter to see if that improves down speed?