(Advice needed)

Hi, newbie here.
my parents wanted to renovate our house and found a contractor contact from a magazine (more like a pamphlet), his name is Wilson.

This Mr Wilson is based in Seremban and my house is in Serdang. He claimed that he had did quite a lot of construction and had a construction company.

My house was 22x70 sq ft. The renovation that we planned to make was
1. Extend both ground and 1st floor to the end
2. extend the front living room 5sqft forward
3. make some partition by building walls
4. repair the roof which was always leaking
5. change the floor tile with 2x2
6. painting and wiring

He promised us that it will be done within 6 months and until now he had just came for around 5 times.
1st time is when coming to make quotation,
2nd time is to clean the roof
3rd time is to continue cleaning the roof,
4th time is to clean the parking lot cement
and 5th time is to continue cleaning the cement.

He gave us alot of excuses that he got dfficulty in getting permission to proceed from the local authority, although he gave us a floor plan, but the plan is in wrong format.
When i asked him why is it takes so long time and what can i do, i ended up get scold from him and he even asked us to go to the MP to get approval. When we asked from the floorplan from him, he said it was his company's property and dont want to let us have it.

So no choice, he had wasted around half year basically doing nothing for us, so we had decided to go to MPSJ ourself. At that time we found out that the floorplan he did was in wrong format,and the officer incharge was very effecient. The following few days they already follow up and send an architect to draw a plan for us.
So the question is, is this contractor im hiring is a reliable one? He had FFK us most of the time, and asked for money a few times (about 50k from total 130k his estimation eventhough seems like no progress at all).

So a few opinion i need from all the sifu's here.
1. Do i need to wait for him to continue after got the plan and approval from MPSJ or i should hire another contractor/ ID instead?
2. Do anyone have any contact of contractor/ internal design based in Serdang/ Kajang/ Putrajaya with good reputation/labour/ efficiency with reasonable cost?
Thanks.