Hired to do a paver patio with outdoor bar. I had tremendous issues with the customer service and workmanship combined. The following issues came about and made this experience a nightmare:1) Priced the wrong pavers out even though given exact style and size, then charged more for ones we actually wanted. 2) Built Paver Bar without asking for dimensions, then was told it was too small and given dimensions. They still built it wrong size. They Blamed me-said I gave him wrong size- Tried to charge me to rebuild. Rebuild was done shoddy with large gaps, glue oozing out, stones unglued. 3) Used and manipulated hose bibb that wound up flooding my basement, -when brought to their attention that they could be at fault Foreman became irate and threatened me over phone. Owner called days later after I refused to speak to Foreman. Owner said his guys did not do it, He said, "I asked them and they said no" 4) Asked to do cement footings for a pavilion. Specs were given and footings came out un-level by 3-4 inches. Brought to attention of Foreman -He said owner says you still have to pay for this because the footings have been completed. I said absolutely not that is crazy because I had to spend over $200 in materials plus labor cost to get Pavilion plumb and level- also was forced to cut posts that I did not want to do . Also, Dropped cement all over pavers. 5) They were asked to run conduit for electrical. Electrician says they did not glue conduit joints allowing water to get in and they had to get different, more expensive wire.6) I told owner that I wanted to meet him at my house to go over issues that needed correction. He told me ok and wound up going to my house without permission and without me present making his own punch list. 7) Put in rocks and mulch with no weed barrier as per contract 8) Loose pavers 9) I told foreman/owner that I needed to be present for all future work and I could not take off - He became mad and threatened to bring case to attorney, blamed me for all problems, then Hungup on me. 10) Went to install refrigerator which was on premises for them to build around, discovered that the counter height was 33 inches as opposed to the contracted 36 inches. This meant that the refrigerator could not fit and granite countertop could not be laid. As a result of all of this, I sent a complaint to the BBB on June 14, 2019. I just received a certified letter indicating they are going to file a Construction Lien on my property for the unpaid balance. This to me, is a ridiculous scare tactic with no basis. What do I do?