Why did my telcom account number changed from 119901593345 (26Feb'18) to 337882946 in March '18?JAMES FERREIRA

This is an issue with your telcom, so contact them. My guess is that the person phoning has a hidden number, but your telcom software is seeing it a fraction late due to bad programming. It should be;

1. phone calls us
2. this is the number it is from
3. this number is ex-directory
4. remove number to recipient
5. call recipient with no number displayed

Search internet for Telkom.

contact your bank
change service provider
6 months would suggest that you get a lawyer involved

the hackers and scammers can now get into your account because you have them all the information required
do not put account , personal, telephone numbers etc on an unsecured web page or it will cause you grief

Found the manual available for download here:
Download TELCOM 580 TLC580 User Guide English

Contact paypal and dispute the transaction, then change your password for your paypal account if the purchase was made using funds directly in your paypal account, also if the purchase was made using your credit/debit card number and not from funds in your paypal account you need to report it to the credit card company or your financial institution if it was a debit card.
I hope you get it straightened out quickly,
James

Mine also quit on the 25 of March. Sounds like a similar problem. But I dont' know how to change password.

this is most of the time a spam, dont waste you time on this.

yahoo mail won't come up.