Stay Away from this 'Company'

I purchased six air conditioning units from Colin. The installation was fine. I had to purchase three pumps for three units from Colin. Within a couple of months the pumps stopped working. The only way I could get Colin to replace the pumps was with a lawyers letter. He replaced them. Within two months the pumps failed to work again. I cannot get hold of him. I would strongly advise people to stay away from CB Airconditioning (even if his price is better then the competition).