Luggage delayed and property ******

My wife and I recently flew from Berlin to Johannesburg. Our luggage was delayed - one piece for a day, the other piece for two days. When delivered, both had been plundered. A bottle of special and expensive wine that we had taken time choosing. A new bottle of aftershave, stroop wafels, spéculaas and other confections we brought back for our kids. They provide a number to phone to report missing or damaged goods but as if this moment, I have been on hold for 14 minutes with no answer (at 3:30 on a Tuesday). I feel so abused by British Airways. 5 of 8 flights delayed; zero communication and now an uphill battle to try and prove what was ****** - and at best, monetary compensation for goods that were worth more than just their Rand value to us. I am so angry (18 min on hold now).