When you are in Pollensa next time pop into the tax office on the road opposite Clivia restaurant, there is an opticians on the corner. ( Road is Carrer de Ramon y Cajal )They are very helpful and will give you receipts ( Bins and council tax) for as many years you need. The receipt will have your cadastral value printed on it and remember this can change, mine came down from €114,000 to €95,000 a few years ago, so worth nipping in to get your annual receipt whenever you are able.
When it comes to Non Resident tax remember have to pay 2017 tax by 31Dec this year or face a fine. I completed the form 210 myself ( one for me and one for my wife as property was in joint names, the tax is calculated and divided by 2 ) I always paid it when I was out
in October.
If you can’t do it yourself google “Spanish Tax Forms” and a gentleman called John will do it for you for about £30 each and send you completed forms by email that you can take to the bank.