Bad, bad service

On 30/01/2020 Dents employees came to fix a noisy ceiling fan in my house. When I switched the fan on, a few days later, the noise was back. I went to the shop on Saturday 15/02/2020, to pay my bill and made an appointment with Dents, while in their shop, to come and fix the fan on Tuesday 18/02/2020. They did not honour this appointment, nor phoned or emailed me, only 2 days later, they phoned with an excuse! The worst service ever, and believe me, you pay an arm and leg for their services. (I could have bought a new fan with installation for the fee they charged me) Unacceptable that a company like Dents treats a paying customer this way.