Toyota — issue with toyota etios engine since purchase

Address:

Rangareddy, Andhra Pradesh, 500047

Issue:
Engine oil is getting completely dried up before the stated kilometers cycle, due to which engine oil has to be top up very frequently. This is a very high cost for me (As engine oil has to be topped up every 20 days, much before the kilometers cycle). I fear if this problem is not rectified, it will affect the engine.

Issues observed since purchase and were not rectified even after multiple complaints to the service center and toyota india.
(Out of many issues – for one issue they took around 4 months for them to rectify tire wobble issue and provide vehicle transfer papers from the date of purchase.)

Car details:
Toyota etios vxd
Registration no. Ts08 ue 0609
Purchased in the month of november 2016, car purchased from toyota u-trust hyderabad.
(Showroom yashoda krishna uppal hyderabad)