Poor customer service from my experience also still waiting on fittings which I ordered ages ago. Gave up in the end ordered elsewhere got following day.
excellent customer service.
sent me out spare parts, tried to help me fix a problem i had.
in the end they said they would just send out a whole new RO, and they sent me out a better one than the one i had as good will.
so i ended up with a £400 RO instead of the £250 one i had.