Your "service" is a joke

I was rear ended two weeks ago. I immediately phoned and logged the incident with you, and got a no-claim letter as I was not at fault. After 4 days it became clear I'm not getting anywhere with the other party's insurance and reopened the call with you. Last week Tuesday (21 May) I was told an assessor will phone me. It is now the next Monday (27 May) and I have still not gotten single call from any representative in any department, if I don't phone I don't hear anything. Most calls I need to phone twice, because your representatives read up until "no-claim letter has been sent" and stops caring at that point, so I have to phone again to get someone competent enough to actually get an answer. I've been "transferred to the assessments department" 3 times today (27 May) alone, and not a single time did anybody actually answer the call. It's now been nearly a week, I still don't know ANYTHING, as nobody in your company has phoned or email me once, if I don't call, I don't find out, if I do call, I just get beaten around the bush for a few minutes before being told to call back. I've also got 3 records of "the assessor will call you", which is clearly also a lie. I've been insured with your company for years on end now, and this is how you treat your clients? This is ridiculous, I'm done