61331 contract law/ evidence law/ presumption of payment/ telephone bill contract law Federal supreme court of Ethiopia cassation decisions volume 13 evidence in contract law presumption in contract law የፍ/ብ/ህ/ቁ 2024(ረ) ድንጋጌ ከስልክ አገልግሎት ክፍያ ጋር በተያያዘ ተፈፃሚነት የሌለው ስለመሆኑ፣ የፍ/ብ/ህ/ቁ 2024(ረ), 2023, 2022 Download Cassation Decision