****** parcel and forged signature

My dad ordered a device for me on the 12th of March and the device was handed over to RAM on the 15th of March. There was no communication from them until the 20th of March and with that communication they claiming that they delivered on th 19th yet he was called nor informed. They further forged his signature unfortunately for them my dad is not in the country so I was added as a third party . I called on Friday to enquire and they kept putting me on hold, they really the worst . I am now inconvenienced because of their drivers