Trust me, any number that they have, just change your number, cause i have been also receiving alot of calls and messages, even if you block them, they will keep using other number to text you, even though we are to just ignore and block, but seeing the message stress you out, so same goes for me, i just change my number...you will be less stress..and you will feel better, cause if you dont change, when they text you, they will know you are seeing the message, so my suggestion just change your number. for the rest dont worry, just like what they told you, just be careful and if u see anyone suspicious or anything dial 999 without hesitation, that what i did, as impressively the runner got caught. Everyone will have that time that we stupidly did something that we regret, i also regret too, but what have happened cannot be undo, so the next thing is, move on and be more careful next time.. Even though i am still worried now if they will come again....but if they really want to come we cannot stop also, so just call 999..they are always here for your safety...hope you get thru it like me..lets be strong together and stop them...