Bugman is useless!

We were 'offered' a special rate to fumigate because were are pensioners. Assurance was given that the roaches would be eliminated. After spraying inside and outside, no noticeable decline in the numbers of roaches was evidenced. A few weeks later, after a call to inform them, they arrived to once again proceed with same treatment. That was over a year ago and the roaches are everywhere! Between then and up to now, we have spent a fortune on bug sprays. We recently called in a different company who performed a different spray operation. Within a week, there is a clearly noticeable decline in the roach population. The company stated that if after 2 / 3 weeks if required by us, they would come to treat again.