Moved into a condo but too many issues.. any advice?

I’m in a nightmare situation and need some urgent advice. I moved into a 1bed 1bath condo in dt 2 days ago but everyday new issues are adding up.

1. There’s leakage from upstairs in the bedroom. Ceiling and tiles are damaged. (Also the light is not working - prob due to leakage)

2. The heater is not working. Current temperature is 16 degree Celsius. And it requires technician to come.( which will take awhile)

3. Other issues: dishwasher broken, the cleaning was not done -> the cleaning was done on day2 I moved on after my realtor complained about it.

I want to know my rights under the RTA regarding these failures. Thanks