MWEB over charge and under deliver.

I upgraded my line from 100/ 100 to 200/200 in Nov 2022. I have complained numerous times via the App of slow internet speed and all the I get told to do is reset the router. On three different occasions I have tested my line speed directly on the OTC box and it does not get close to the 200 Mbps I am paying for. I am tired of your empty promises fix my line and refund me for the over billing. Oh, ja please don’t tell me I have to have CAT 9 e network cables as the other network cables can only handle a max of 100 Mbps.