Too many ongoing problems with no final response.

Disappointed in the after service when issues arise that isn't simple to deal with. Have been getting issues with the system they installed for months now and while pleasing and his team have repaired a leak, changed the pump I still am not getting my system to heat up. I WhatsApp pleasing with no response now, i emailed zeenath and James without response as well. It appears as they are avoiding looking at the issue and determining if there is a larger issue at hand. If there isn't anything that's fine, but that can't be determined without looking first. I have other installers saying their systems heat up to 70 degrees on a average day, mine stays luke warm at best. Limescale buildup on the manifold shows a leak somewhere as well potentially.