Internet speeds intermittent. Charged for speeds that are not actual.

Several wires replaced at street and speed is still only producing 16MBPS. We're being charged for *up to 1100MBPS. 

How can we have a service tech here to correct the issue and who do we get in touch with in regards to credits for being charged for speeds that we've not ever been able to receive. After lines were replaced at the street and damaged new lines repaired, techs tested speeds Outside to say everything was Ok. 

Tech explained that prior; further residences down the line/street were actually receiving less than 1mbps and couldn't believe they weren't calling in.