The family of a vulnerable Scots pensioner have issued a warning after vile internet scammers conned their mother out of £70,000.Anne Robertson, 67, was first contacted by email at the beginning of May and urged to invest in a Bitcoin scheme with promises of huge paybacks.But the fraudsters managed to gain access to her computer and bank account before making three separate loan applications to RBS, Halifax and Hitachi Finance.The sophisticated scam artists persuaded Anne to hand over various documents which resulted in the applications being approved.As soon as the funds entered the pensioner’s bank account they were immediately transferred out leaving the mother-of-two liable for the huge monthly repayments.Worried son John, who believes