Worst 5 star hotel i have ever stayed in my life. ...

Worst 5 star hotel i have ever stayed in my life. I doubt if it deserves to be in 3 star category also. Rooms fixtures are very old and untidy. The bed you will not even feel like touching, the sheets are very old full of spots, carpet and curtains are very dirty and there is a foul smell in the room, which is very suffocating.
Room service , house keeping and reception will never pickup the call, i went down to the reception as my call and request remained unattended. The staff is very untrained, slow and careless as if they hardly bother about their guests. I am amazed that how this hotel is able to keep its 5 star status even after worst amenities.
The moment I entered the room and checked the sheets, there were hairs on it. Washroom fixtures are very dirty and stained.
Overall i had a worst experience. Staff , amenities, ambiance, facilities nothing is upto the mark.