The Israeli said his team, who lost 2-1 to Senegal on Monday, had to train at Oyala instead of Mongomo, where they face Algeria on Friday and also South Africa next week.
"We had to drive one hour while Algeria could train near the hotel," an irritated Grant told reporters on Thursday.
"They change the venue of the training, both of us need to train one hour from the hotel a day before the game. We asked to come closer, they didn't let us do it."
The journey was not helped by a sub-standard bus, the former Chelsea manager said.
"I am sorry to say you need to see our bus. It is a bus which behaves like a ship.
"We are the only team that receives this bus, the other team have a good bus. So when I say good words about the organisation I want you to know about the other things."
The coach, who has also managed Partizan Belgrade, West Ham United and Israel, said he would not been attending news conferences in future, adding he had been given little notice about timings and that he needed to be with his players.
"I came here because I respect you. But it will not happen again," he said.
Asked if he felt under pressure, Grant smiled and said every football game had pressure.
"I don't think pressure is a negative word. Of course it puts you under pressure but we were under pressure before the game," he said.
"I say to the players there are two kinds of life: the people who are on the beach without pressure, and the people who need to play football and achieve something.
"We want to achieve something especially after the bad result in the first game even though I thought the players played very well."
Ghana striker David Accam said his team knew all about Algeria's revered reputation but was not worried.
"I know Algeria are the best in Africa," he said.
"For me we have a lot of quality in our team to win tomorrow so we will concentrate on our game and try to play to our strengths."
(Writing by Patrick Johnston in Singapore; Editing by Greg Stutchbury)
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