Cell C disappoints in numerous delays in black listing my ****** phone

My phone was ****** on 4 August, at which time I reported it to Cell C to blacklist and block my number (which should take 24-48 hours), it is now 18 August and the query has still not been resolved, I have phoned their call centre daily, resent forms and no-one can escalate this or tell me what the delay is. I cannot claim from insurance nor get a case number without the ITC (blacklist number). I've been a customer with Cell C for 6 years and will NEVER return, a number of crimes could have been committed with my phone in the last 14 days - come on Cell C get your act together, this is a ****** phone and should be treated with urgency. My query is still not resolved.