Bangalore Metropolitan Transport Corporation [BMTC] — No proper timings for Bus V-500A

Bus number, V-500A which goes from Banashankari to Hebbal through outer ring road, there is no proper scheduled timing mentioned for this bus. Need to wait for 1 hour or even 1 and half hour in mornings, There is no proper response from Banashankari TTMC, when called, they say "Its coming on the way" ( yet does not come for 30min ) or "Some problem with the bus". Some or other reasons they tell. this is a huge problem for people who travel daily from Banashankari to Manyata Tech park. We are reaching late to office. Please kindly suggest proper scheduled timings so that we reach on time for our office. Or if buses are not available, please mention it. ( so that we could make other arrangements). They say these buses (V-500A) run every 15 min, but during morning times, we are waiting for 1 hour. Kindly check on this issue.