Whipple plumbing... I called for a $49 drain cleaning special. SLC Utah

I called Whipple plumbing for their $49 drain cleaning special for a clogged drain. When the tech arrived he jacked up the price to $176, he then spent 45 minutes vibrating the floor till the drain started to flow. Ight worked ok for les than 3 weeks. I called the first evening and told to call during business hours which I did the next day. The receptionist said "it is up to the tech to honor the guarantee." That was 1.5 years ago they won't return my calls nor honor the guarantee.