Old Mutual refuses to pay claims

I am a very angry and upset client. I had taken out home contents cover with FNB Brokers underwritten by Old Mutual Insurance in November 2019, on 6 December 2019 i had a unforeseen burglary, entry was gained via a room window where a burglar bar was broken. An assessor was appointed and the claim was paid out after almost a month with lots of issues. I had changed risk addresses and in the process noticed a set of pots were missing which i then advised brokers -a photo of one of the pots which was in use at the time was sent- in return the assessor advised that i mentioned i had no such pots and invoices were required - i advised that this was a gifted custom during a wedding -i have requested the invoice from the person who had gifted the pots and are still awaiting feedback i asked for no further communication with the assessor - in the interim another investigating assessor was appointed to validate the claim - i will not be dealing with another assessor for such a small sum of money - i did say i will revert once i receive the invoice. I get numerous calls from other assessors now. I have now taken out insurance with another insurer. In the meantime i have a fridge that was broken this morning and i am unable to proceed with claim due to all the issues. I am very unhappy as to how the matter is handled. I require assistance urgently.