Best Water Heater Installation Or Replacement in Dallas TX

My wife called to follow-up on an estimate that I did online.I have a problem with a water heater installed by another company almost 2 years ago.I WANT A NEW WATER HEATER INSTALLED AND THEY REFUSED.WOW your business must be that good to turn down a job that all you have to do is come in install a new water heater and I pay you and you leave.I just don't get today's worker's I guess you just want to get paid and do no work......