Seizures, cardiac problem. A month.

From mid February'19,my father started getting seizures.he mentioned he was falling down. After 3-4 days when we could see him in seizure state, we took him to neurologist who prescribed Levera 500 twice a day.2 days seizures stopped and later it happened 4-5 times a day.doctor wasn't ready to change medicine we took him to another hospital after a month. They suspected heart problem too.But in ecg and eco nothing came up. My father was not ready to do 72 hours halter monitor. After another month we took him to another neurologist, who checked and gave soval chrono 300 and ceravate. This went for 14 days, by the end of which my fathers senses reduced, could not get up for washroom, doesn't recall eating, doesn't recall bathing.During next visit doctor gave vivoz, valprol 500, cognifast.When he takes the tablets he says his head is rotating, he feels pain in heart, gets lot weaker, cannot eat food. He is diabetic since 30 years,had depression and bipolar disorder in past. Please suggest