Got 0 points on PIP

I have heart disease, thyroid trouble, type 2 diabetes and severe depression and I attended an assessment for PIP and got 0 points. One of my neighbours cheerfully told me him and his wife get the maximum amount plus a mobility vehicle and he said you need to be a great actor and to play the system. I was disgusted, especially when I was on a bus coming home when I saw him sprinting like Mo Farah for 200 yards to catch the bus (with his stick high in the air). Fuming is not the word!!!!