Angry client of 3 years

Hi I have a Policy with Standardbank and put in a claim for building insurance, they captured the claim and then the following day the assessor called and said he would come in the afternoon, he never called or showed up, then he called friday saying he got busy and would like to come that afternoon and never showed up again no call nothing after me reshuffling my day for him. On monday he calls in the morning saying he is outside how rude to assume and just pitch up to my house. He then does the assessment after me voicing my frustration. Thereafter days later I call him asking what was going on and he said he sent Standardbank the assessment, I then call into the call Centre and told the claim was repudiated and i asked why nobody has called me I got no answer. I asked what about the garage and was told the assessor did not note the garage in the claim which i mentioned when I called to claim. I then asked that a manger call me before the end of the day which she did and said they would sent an internal assessor. The assessor called and scheduled for the next day 09h00 and didn't show up and called at 10h30 with some excuse and wanted to come in the afternoon which i said i was not available we should do tomorrow he explained he had a morning meeting but will see what he could do and call me back. He has yet to call 3 days later and I have called requesting the manger to call me which was ignored. I am frustrated and want this sorted asap because this sounds like nobody is doing their jobs.