Everything In-ground Pools

Have only had issues with algae on summers we replaced we had a bad pool filter, so it came as a shock when we started having algae after these guys replaced our filter. We repeatedly put in chlorine and algicide and phosphate killers like they said and it made no difference. They claimed we were being stupid or that our pool place was scamming us, even though every other summer is fine and they give us read outs of the chemical makeup. Their worker stops by, first just checks to say the water is clear then says the filter is fine and starts swearing at us and blaming everyone except himself. If you want someone to do their job, don’t go there these guys.