New Zimbabwe coach Kevin Curran hit out at the standard of umpiring after his side's 2-0 series defeat by India.
Curran claimed some Zimbabwe batsmen were given out incorrectly while appeals from the bowlers during India's innings were turned down.
"The lesser countries seem to get poor decisions all the time. It's not acceptable," he said.
"This has been happening to us for a long time," added Curran, who took over from Phil Simmons last month.
India won the second Test by 10 wickets despite defiant batting by Hamilton Masakadza and Andy Blignaut during Zimbabwe's second innings.
India skipper Sourav Ganguly said the home side had shown signs of improvement during the series.
"They just need people to stand up and come through. They can bat and bowl, but not perhaps consistently.
"They quite clearly are missing the likes of Andy and Grant Flower and others, including Ray Price," said Ganguly.
He praised Man of the Series Irfan Pathan, who picked up 21 wickets - equalling the record for a two-Test series.
"We played well even though the results were quite expected.
"I thought the seamers bowled particularly well. Irfan Pathan was outstanding.
"He loves the Kookaburra ball and has been getting swing early on. He had a great Test series," Ganguly added.
"It's good to know about the record and I'm playing my best cricket at the moment.
"My bowling has come on so well recently - it has been a wonderful series for me," Pathan commented.