Misleading sales rep and seeking advice

Hello all.

About 5 months ago we switched to Virgin media through a door to door salesman, whom upon post change has meant we took misleading action on changing. We were guilt tripped into thinking the new service was comparable in quality and performance to our previous package but at a reduced cost. Unfortunately this is not the case.

The performance of the broadband service has been unbearable. As an individual I require as low latency and jitter as possible. the consistent high latency was and still is not fit for the purpose we were sold on, which contradicts what we were told.

I would like to know who or what my next steps could be, as annoyingly, and well I am unsure whether these conversations are recorded but objectively we were lied to. probably just because the salesman wanted the sale. for obvious reasons.

Any help or advice on the matter would be greatly appreciated, and hope you all have a good day :)