They have a high pressure sales call center with s...

They have a high pressure sales call center with sellers who actively lie or hide the truth. One big lie is their free home installation service. What they really mean by free is you are free to do it yourself. Optima has this automatic call which tells you what date they are to show up to your door but what they will not tell you is that it will be a box thrown at your door with hardware you must installl yourself. They have a 14 day cancellation policy but that simple box takes them 12 days to deliver so be quick to cancel your contract with them otherwise their technicians cost hundreds of kuna.
Also their contract is not in pure Croatian but in a remote bosnian dialect or such just to make understanding their crooked words extra complicated.