Weak workmanship and no Integrity

Anthony Kritzinger(builder) , did renovations at our home in 2018 when he came to quote for the job he said they give 5 year warrantee on building works performed. After one year our house has multiple cracks and the roof is leaking, after speaking to him he said he will come out and do inspection a month later we are still waiting for him to come out or even take our calls or respond to messages. I would not recommend him to anybody as he promises lots but fail to do good on them shows very little integrity concerning that.