Online application, Online testing, Assessment Centre and Individual interview

Sent my CV through LinkedIn (October), invited to an online digital interview (December) and then invited to assessment centre (February). Overall, very unorganised I was told from my digital interview in December the results would be out in mid-January but I was called in February asking to come to an assessment centre 2 days later. From the assessment centre they said we would be notified in 2 days but instead it took 2 weeks and now I'm still waiting on an expenses form. Also, they don't answer emails or calls.