IPA: /dɪsˈsɜːrvɪsəbl/
KK: /dɪsˈsɜːrvɪsəbl/
Something that causes harm or is not useful; it is detrimental or unhelpful.
The disserviceable actions of the company led to many complaints from customers.
Disserviceable → It is formed from "dis-" (meaning apart or away) and "serviceable" (from Latin "servitium", meaning service or slavery). The word describes something that is not capable of providing service or is detrimental to service.
Think of 'dis-' meaning 'apart' and 'serviceable' meaning 'able to serve'. This helps you remember that 'disserviceable' refers to something that is not able to provide good service.