Waste of time and money

I have had such a bad experience with this company. Initial service was booked for the 7th February for bed bug infestation. Technician was over 2 hours late - there was still bed bugs after the service so wanted to book for a follow up, over a weekend when everyone is available to leave the house. They then informed me that they do not book follow ups over the weekend, which I was not informed about at initial booking, if I was then I would never have booked it in the first place as I work from home. After a lot of back and forth emails and calls we eventually agreed for them to come on Tuesday 17th March (yesterday) the technician informed me that there was a huge infestation still in my children's bedroom. Surely if a proper job was done when they initially came then it wouldnt be so bad. When I was allowed back in the house I went to check and there were bed bugs walking all over my daughters bed and on the curtains. Are they not supposed to be killed on contact when sprayed? I have reached out via email today to try and speak to the woman I booked the follow up with but have just been ignored. Alot of money was spent on the initial booking and if there is still an infestation after 2 bookings then surely my money has been wasted and I want a full refund. this company is ridiculous and I will do everything in my power to get my money returned.