Hi am rhema01
If I find my self in a deserted street and I notice someone following me
My first cause of action would be to remind myself to stay calm and relax my nerves
Then I will proceed to finding the next crowded or less lonely street or shop with people around, and make an emergency call to the police.
Also my advice would be to try as much as possible to get a descriptive picture of the person in your brain to better assist the police in finding the person.
Also please try not to keep looking over your shoulder in other not to alert the person.