Deposit not protected or not returned

Typical aim: Return/protect deposit; compensation
Be specific: dates, times, order numbers, names, promises made, and the resolution you want.
We’ll reference:
Acts & laws: Housing Act 2004 (tenancy deposit protection); Deregulation Act 2015
Ombudsman/Regulator: Housing Ombudsman Service
Guidance: https://www.gov.uk/tenancy-deposit-protection