Poor and bad customer care and deducting insurance money arrogantly

I hired staff for my daughters confirmation celebration in November, paid 3500 deposit, left with 4500 including 1300 insurance on the 09 November 2019. I collected goods on the 01 December 2019 as celebration was the 02 December 2019 and had to return staff on 03 December 2019 where I will recieve my insurance money if everything is returned. On Sunday when dishing on the food warmers I noticed the 02 food warmers, one round and gold and the other square and stainless there was no dishung containers inside. I sent her a pic showing her my disappointment. The lady assisting me then dis not open the warmers when counting as I was not happy cause I hired 04 gold and 04 stainless but that day it was only stainless and whilst vicing my satisfaction and the workers bringing gold warmers for exchange which they said were new, were not opened as part of checking and control. When we returned goods the owner Merry refused to give me whole 1300 took 400 saying he is paying for dishes inside warmers they have me without. They are so arrogant in dealing with clients and customer care is very bad. My husband was made to wait with my niece for more than an hour checking CCTV footage and they pointed to someone not even me and when told they said they will check again and call me for my money collection. Up to today no call no money, nothing, poor and bad service recieved and my money taken just like that. I need my money back as I communicated on time and send her pic on missing warmer dishes...her comp no is ***. My invoice no is 0822