19 days waiting for promised service!

Day 19 - call 3! Ordered a new filter and asked they repair our Jacuzzi as it won't work, either the thermostat or element is broken (still under warranty, we bought it 10 months ago). When I point out that he has promised to call me back and sort us out on 2 occasions and this is day 19 now, his response is \I know, I know, I know\". No apology for repeatedly forgetting to come back to me, or to order the parts needed or anything. Nothing upsets me more, bad service is one thing, but not even apologising when you know you have failed to deliver on your promises is something that upsets me to no end!"