Checking information, the telephone is wrong in SD. There is only one that can be used, it is +34 648 93 60 88 .  It is the phone of an instructor. I got the information from AENA
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My colleague has looked into this and we are currently listing the same telephone number as is given in the VFR Manual for Spain. It would not be normal for us to list an instructor's telephone number unless we received some communication from the airfield itself that the listed telephone number should be replaced.